Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh cho hoi snippets" » "danh cho code snippets", "danh cho hoc snippets", "danh cho moi snippets", "danh cho doi snippets", "doanh cho hoi snippets", "dan cho hoi snippets", "dinh cho hoi 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: (((("danh cho hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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