Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan duc hoi snippets" » "phan duc code snippets", "pham duc hoi snippets", "phan tu hoi snippets", "phan dau hoi snippets", "phan duoc hoi snippets", "phan duc hoa snippets", "phan duc loi 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: (((("phan duc hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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