Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"toc cho hang snippets" » "toc cho thanh snippets", "toc cho phan snippets", "toc thi hang snippets", "toc co hang snippets", "hoc cho hang snippets", "toc cao hang snippets"

Try widening your search to All Fields.

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