Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dung duy anh snippets" » "dung du anh snippets", "dung quy anh snippets", "tung duy anh snippets", "dung duc anh snippets", "dung duy khanh snippets", "dung thuy anh snippets", "dung duy anh 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: (((("dung duy anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung duy anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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