Perhaps you should try some spelling variations:
"luat cau data snippets" » "luat dau data snippets", "lua cau data snippets", "luat cac data snippets", "luat a data snippets", "luat cau hat snippets", "luat cau danh snippets", "luat 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: (((("luat 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: (((("luat cau data snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat cau data snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat cau data snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.