Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dan hoat ung snippets" » "van hoa ung snippets", "dan hoc ung snippets", "danh hoa ung snippets", "dan hoa ung snippets", "dan hoat dong snippets", "dan hoa trung snippets", "dan hoat ung 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: (((("dan hoat ung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hoat ung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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