Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khoa can liu snippets" » "khoa cam liu snippets", "khoa cap liu snippets", "khoi can liu snippets", "khoa fan liu snippets", "khoa dan lieu snippets", "khoa juan liu snippets", "khoa can liu 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: (((("khoa can liu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa can liu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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