Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"luu dan vung snippets" » "luu dan dung snippets", "luu dao vung snippets", "luu dang hung snippets", "luu van vung snippets", "luu hanh vung snippets", "luat dan vung snippets", "luu dan vung 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: (((("luu dan vung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luu dan vung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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