Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi hoc cho snippets" » "doi hoc code snippets", "doi hoac cho snippets", "dai hoc cho snippets", "hoi hoc cho snippets", "doi hoc cao snippets", "doi hoc pho snippets", "doi hoc co 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: (((("doi hoc cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi hoc cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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