Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat luat cac snippets" » "luat luat cac snippets", "dap luat cac snippets", "dat luan cac snippets", "mat luat can snippets", "mat luat cau snippets", "mat xuat cac snippets"
"locating bug code snippets" » "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: (((("mat luat cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat luat cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat luat cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat luat cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.