Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"han dan hoc snippets" » "han dan code snippets", "nhan dan hoc snippets", "han danh hoc snippets", "shan dan hoc snippets", "han van hoc snippets", "han dan toc snippets", "han dai hoc 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: (((("han dan hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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