Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan dam toi snippets" » "thanh dam toi snippets", "chang dam toi snippets", "khanh nam toi snippets", "khan dam thi snippets", "khan dan toi snippets", "khan dem toi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("khan dam toi snippets"))) or ("locating bug code snippets"))~.
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