Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khi doi tran snippets" » "khi doi tan snippets", "khi doi tram snippets", "khi doi trong snippets", "khi dai tran snippets", "khi hoi tran snippets", "khi moi tran snippets", "khi doi tran 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: (((("khi doi tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi doi tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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