Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan ve do snippets" » "doan va do snippets", "doan vi do snippets", "toan ve do snippets", "doan ve dao snippets", "doan ve doi 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 ve do 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 ve do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan ve do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan ve do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.