Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phap duc con snippets" » "phap duc code snippets", "pham duc con snippets", "phan duc con snippets", "phap doc con snippets", "phap duc cong snippets", "phap duc ton snippets", "phap duc cuong 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: (((("phap duc con snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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