Perhaps you should try some spelling variations:
"quan cau data snippets" » "quang cao data snippets", "toan cau data snippets", "quan ha data snippets", "quan a data snippets", "quan cau hat snippets", "quan cau danh snippets", "quan cau data slippers"
"python using a snippets" » "python using a 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.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("quan cau data snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan cau data snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan cau data snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan cau data snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.