Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoi thu phan snippets" » "hoi thu nhan snippets", "hoi thuat phan snippets", "hoi than phan snippets", "hoai thu phan snippets", "hoi chu phan snippets", "doi thu phan snippets"

Try widening your search to All Fields.

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