Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"yuan yin liu snippets" » "yuan yong liu snippets", "yuan yuan liu snippets", "xuan yen liu snippets", "yuan jin liu snippets", "yuan xin liu snippets", "yuan lin liu snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("yuan yin liu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("yuan yin liu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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