Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ban dan hoc snippets" » "ban dan code snippets", "ban hang hoc snippets", "ban hanh hoc snippets", "ban quan hoc snippets", "ban van hoc snippets", "ban dan toc snippets", "ban 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: (((("ban 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: (((("ban dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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