Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"van nhan ha snippets" » "van phan ha snippets", "van thanh ha snippets", "danh nhan ha snippets", "van nhanh ha snippets", "van nhan hoa snippets", "van nhan va snippets"

Try widening your search to All Fields.

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