Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"
"thai hoc sach snippets" » "dai hoc sach snippets", "bai hoc sach snippets", "hoi hoc sach snippets", "thai hoc sinh snippets", "thai hoc cac snippets", "thai hoc anh snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("thai hoc sach snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thai hoc sach snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets")).
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