Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van bac coc snippets" » "van bac code snippets", "van ban coc snippets", "van bao coc snippets", "van hac coc snippets", "van bac hoc snippets", "van bat coc snippets", "van cac cuoc 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: (((("van bac coc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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