Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tap giam doc snippets" » "tap giai doc snippets", "tac giam doc snippets", "phap giam doc snippets", "tap gian doc snippets", "tap giam dau snippets", "tap gian don 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: (((("tap giam doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tap giam doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tap giam doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tap giam doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.