Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan hoc doc snippets" » "dan hoc code snippets", "van hoc doc snippets", "dan toc doc snippets", "dai hoc doc snippets", "dan hoc duoc snippets", "dan hoc do snippets", "dan hoc doi 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: (((("dan hoc doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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