Perhaps you should try some spelling variations:
"lochating bug code snippets" » "locating bug code snippets", "lochating bug core snippets"
"python using java snippets" » "python using data snippets"
"voi cho hoc snippets" » "voi chon hoc snippets", "hoi cho hoc snippets", "moi cho hoc snippets", "voi co hoc snippets", "voi khoa hoc snippets"

Try widening your search to All Fields.

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