Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu hoi cho snippets" » "thu hoi code snippets", "thu hoai cho snippets", "thu phoi cho snippets", "thu hai cho snippets", "thu hoi chu snippets", "thu hoi co snippets", "thu hoc cho 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: (((("thu hoi cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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