Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"duc phuc sen snippets" » "dum phuc sen snippets", "duc phung sen snippets", "duc suc sen snippets", "duc phuc se snippets", "duc phu yen snippets", "duc phu san snippets", "duc phuc sen 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: (((("duc phuc sen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc phuc sen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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