Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phu hoi phan snippets" » "phu phoi phan snippets", "phu hoc phan snippets", "phu hoa phan snippets", "phuc hoi phan snippets", "phu doi phan snippets", "thu hoi phan snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phu hoi 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: (((("phu hoi phan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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