Perhaps you should try some spelling variations:
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets", "python using sat slippers"
"phap van sach snippets" » "pham van sach snippets", "phan van sach snippets", "phap han sach snippets", "phap ban sach snippets", "phap van hach snippets", "phap ngan sach snippets", "phap van sach slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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