Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khan than va snippets" » "phan than va snippets", "khoan thanh va snippets", "khanh thanh va snippets", "khan thanh va snippets", "khan nhan va snippets", "khan toan va snippets"

Try widening your search to All Fields.

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