Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi nhu doc snippets" » "doi thu doc snippets", "do nhu doc snippets", "doi nhan doc snippets", "doi nhu duoc snippets", "doi nu doc snippets", "doi chau doc 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: (((("doi nhu 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: (((("doi nhu doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi nhu doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi nhu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.