Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"coc cac thoi snippets" » "coc cac toi snippets", "coc cac hop snippets", "coc cac tro snippets", "hoc cac thoi snippets", "co cac thoi snippets", "con cac thoi snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("coc cac thoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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