Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"mong hoc tan snippets" » "dong hoc tan snippets", "mon hoc tan snippets", "mang hoc tan snippets", "mong hoc dan snippets", "mong hoc tap snippets", "mong hoc tai snippets"

Try widening your search to All Fields.

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