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"
"dung hoc do snippets" » "dong hoc do snippets", "dung thuoc do snippets", "trung hoc do snippets", "dung hoc doi snippets", "dung hoc co snippets", "dung hoc bo snippets"

Try widening your search to All Fields.

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