Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cac hoat anh snippets" » "cao hoat anh snippets", "cac hat anh snippets", "cac khoan anh snippets", "cac hoang anh snippets", "cac hoat tinh snippets", "cac hoa thanh snippets"

Try widening your search to All Fields.

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