Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tran hai han snippets" » "tran bai han snippets", "tran chau han snippets", "tran nhat han snippets", "tran hai phan snippets", "tran dai han snippets", "tran hai tan snippets", "tran hai han 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: (((("tran hai han snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran hai han snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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