Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thuy van tin snippets" » "thuy san tin snippets", "thuc van tin snippets", "chu van tin snippets", "thuy van tien snippets", "thuy van tan snippets", "thuy van thinh snippets", "thuy van tin 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: (((("thuy van tin snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuy van tin snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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