Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tang son cau snippets" » "tang son code snippets", "trang son cau snippets", "lang son cau snippets", "bang son cau snippets", "tang song cau snippets", "tang so cau snippets", "tang toan cau 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: (((("tang son cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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