Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"bac tren thi snippets" » "rac tren thi snippets", "tac tren thi snippets", "sach tren thi snippets", "bac trien thi snippets", "bac tran thi snippets", "bac trieu thi snippets", "bac tren thi slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("bac tren thi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bac tren thi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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