Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khanh van ly snippets" » "thanh van ly snippets", "khanh vinh ly snippets", "hanh va ly snippets", "khanh van ky snippets", "khanh van le snippets", "khanh van lu snippets", "khanh van ly 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: (((("khanh van ly snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khanh van ly snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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