Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi van son snippets" » "phi van code snippets", "phi san son snippets", "thi van son snippets", "phi va son snippets", "phi van dong snippets", "phi van cong snippets", "phi van sung snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phi van son snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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