Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi doi nuoc snippets" » "phi roi nuoc snippets", "phi doi cuoc snippets", "phi hoi nuoc snippets", "phi loi nuoc snippets", "phu doi nuoc snippets", "khi doi nuoc snippets"

Try widening your search to All Fields.

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