Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phap duc hoc snippets" » "phap duc code snippets", "pham duc hoc snippets", "phan duc hoc snippets", "phap doc hoc snippets", "phap duoc hoc snippets", "phap luc hoc snippets", "phap du hoc 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: (((("python using java snippets") or ("phap duc hoc snippets"))) or ("locating bug core snippets"))~.
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