Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"thu hoai duc snippets" » "thi hoai duc snippets", "thu hai duc snippets", "thu hoan duc snippets", "thu hoa duoc snippets", "thu hong duc snippets", "thu ho duc snippets", "thu hoai duc 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 hoai duc 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 hoai duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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