Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau ket doan snippets" » "dau ket hoa snippets", "dau le doan snippets", "dau ket van snippets", "dau vet doan snippets", "dau viet doan snippets", "sau kiet doan 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: (((("dau ket doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau ket doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau ket doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau ket doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.