Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cao duc phan snippets" » "cao dung phan snippets", "cao duc thang snippets", "cao duc phung snippets", "dao duc phan snippets", "cao suc phan snippets", "giao duc phan snippets"

Try widening your search to All Fields.

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