Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan tu hoa snippets" » "doan thu hoa snippets", "dan tu hoa snippets", "toan tu hoa snippets", "doan tu khoa snippets", "doan tu hoai snippets", "doan tuy hoa 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: (((("doan tu hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tu hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan tu hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tu hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.