Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"voi ngon anh snippets" » "voi ngan anh snippets", "voi nguoi anh snippets", "coi nguon anh snippets", "voi ngoc anh snippets", "voi ngon thanh snippets", "voi ngoc lanh snippets", "voi ngon 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: (((("voi ngon 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: (((("voi ngon anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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