Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van nhan o2 snippets" » "van phan o2 snippets", "van thanh o2 snippets", "danh nhan o2 snippets", "van nhan hoa snippets", "van nhan hoc snippets", "van nhan con snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("van nhan o2 snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van nhan o2 snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
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