# Cannot search by Thai tag
**URL:** https://meta.discourse.org/t/cannot-search-by-thai-tag/160699
**Category:** Bug
**Created:** [August 13, 2020, 6:36am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699 "2020-08-13T06:36:30Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@siriwatknp](https://meta.discourse.org/u/siriwatknp)
#### Post date: [August 13, 2020, 6:36am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/1 "2020-08-13T06:36:30Z")
discourse version 2.6.0.beta1
These are example posts that have tag in Thai.
When I go to search page and try to search with Thai character (no extra vowel) the results match the amount from tag filter.
However, when I search with extra vowel, there is no result found. (but in tag filter there are 17 posts)
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### Author:  [@neounix](https://meta.discourse.org/u/neounix)
#### Post date: [August 13, 2020, 7:12am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/2 "2020-08-13T07:12:38Z")
> [@siriwatknp](#):
>
> However, when I search with extra vowel, there is no result found. (but in tag filter there are 17 posts)
Hi K. @siriwatknp and Sawatdee from Thailand,
I am guessing the app search engine has problems with almost all Thai vowels, (4) tone marks and (5) diacritics?
Reference:
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### Author:  [@siriwatknp](https://meta.discourse.org/u/siriwatknp)
#### Post date: [August 13, 2020, 7:14am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/3 "2020-08-13T07:14:37Z")
Any suggestion about workaround for this issue?
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### Author:  [@neounix](https://meta.discourse.org/u/neounix)
#### Post date: [August 13, 2020, 7:16am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/4 "2020-08-13T07:16:43Z")
My first suggestion is to search the net for similar documented issues and try to find “the way” other search engines manage this layer of complexity; and then look at the Discourse code and see what changes might be required to improve this search algo.
OBTW: Have you tried other Thai char sets in your browser keyboard settings?
Note:
A quick search, I see some experts have proposed the “Two-Pass Search Algorithm” approach:
[https://www.cicling.org/2008/RCS-vol-33/07-Kruengkrai.pdf](https://www.cicling.org/2008/RCS-vol-33/07-Kruengkrai.pdf)
> 6 Conclusion
> We have presented a discriminative learning approach for Thai morphological
> analysis. We consider Thai morphological analysis as a search problem. We propose the two-pass search algorithm that finds the most likely path in the expanded search space. The objective of our algorithm is to increase the coverage
> of word hypotheses based on probability estimation in the lattice. The experimental results on ORCHID corpus show that the two-pass search algorithm can
> improve the performance over the standard search approach
See also: Computers and the Thai Language
[https://lexitron.nectec.or.th/KM\_HL5001/file\_HL5001/Paper/Inter%20Journal/krrn\_52085.pdf](https://lexitron.nectec.or.th/KM_HL5001/file_HL5001/Paper/Inter%20Journal/krrn_52085.pdf)
> This article explains the history of Thai language development for
> computers, examining such factors as the language, script, and
> writing system, among others. The article also analyzes characteristics
> of Thai characters and I/O methods, and addresses key issues involved
> in Thai text processing. Finally, the article reports on language
> processing research and provides detailed information on Thai
> language resources.
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### Author:  [@tgxworld](https://meta.discourse.org/u/tgxworld)
#### Post date: [August 25, 2020, 1:11am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/6 "2020-08-25T01:11:04Z")
@siriwatknp Can you provide me with the text and the search term in text so that I can try to reproduced the problem locally?
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### Author:  [@tgxworld](https://meta.discourse.org/u/tgxworld)
#### Post date: [August 25, 2020, 8:13am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/7 "2020-08-25T08:13:18Z")
@siriwatknp Just saw that you submitted a PR to fix this issue 🙂 The PR looks good to me and has been merged.
[https://github.com/discourse/discourse/pull/10488](https://github.com/discourse/discourse/pull/10488)
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### Author:  [@tgxworld](https://meta.discourse.org/u/tgxworld)
#### Post date: [August 25, 2020, 8:13am UTC](https://meta.discourse.org/t/cannot-search-by-thai-tag/160699/8 "2020-08-25T08:13:21Z")