Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu hoi trac snippets" » "thu hoai trac snippets", "thu phoi trac snippets", "thu hai trac snippets", "thu hoi trach snippets", "thu hoi tran snippets", "thu hoi tac snippets", "thu hoi trac 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: (((("thu hoi trac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hoi trac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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