Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tra duc manh snippets" » "tra suc manh snippets", "tra duc anh snippets", "tra duc minh snippets", "tran duc manh snippets", "tra du manh snippets", "tran duy manh snippets", "tra duc manh 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: (((("tra duc manh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra duc manh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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