Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan hoc de snippets" » "phan hoc code snippets", "phap hoc de snippets", "phan hoa de snippets", "phau hoc de snippets", "phan hoc he snippets", "phan hoc te snippets", "phan hoc do 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 hoc de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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