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