Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach hoi cho snippets" » "sach hoi code snippets", "sach doi cho snippets", "sach moi cho snippets", "cach thoi cho snippets", "sach hoi chu snippets", "sach hoi co snippets", "sach 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: (((("sach hoi cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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