Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"van luc ngan snippets" » "van luc nganh snippets", "van luc nhan snippets", "van luat ngan snippets", "van loc ngan snippets", "van duc ngan snippets", "van lu ngan snippets", "van luc ngan 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: (((("van luc ngan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van luc ngan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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