Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"nam hoc nuoc snippets" » "nam moc nuoc snippets", "nam hoi nuoc snippets", "am hoc nuoc snippets", "nam hoc quoc snippets", "nam hoc duoc snippets", "nam hoc ngoc snippets", "nam hoc nuoc 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: (((("nam hoc nuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam hoc nuoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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