Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nghe cac le snippets" » "nghe cac code snippets", "nghe cao le snippets", "nghe cnc le snippets", "nghe bac le snippets", "nghe cach le snippets", "nghe cac he snippets", "nghe mac le snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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