Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"hoi doi hieu snippets" » "hoi doi chieu snippets", "hoi doc hieu snippets", "hoi doi hien snippets", "hoi doai hieu snippets", "hoc doi hieu snippets", "hoa doi hieu snippets", "hoi doi hieu 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: (((("hoi doi hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi doi hieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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