Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"yulan li liu snippets" » "yulong li liu snippets", "quan li liu snippets", "yanan li liu snippets", "yulan lin liu snippets", "yulan li li snippets", "yulan yi liu snippets", "yulan li 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: (((("yulan li liu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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