Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tran manh lu snippets" » "tran minh lu snippets", "tran thanh lu snippets", "tran van lu snippets", "tran manh tu snippets", "tran manh le snippets", "tran manh cua snippets", "tran manh lu 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 manh lu 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 manh lu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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