Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi ai cung snippets" » "doi gi cung snippets", "doi dai cuong snippets", "doi tai cong snippets", "doi bai cung snippets", "doi tai cung snippets", "doi vai cung 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 ai cung 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 ai cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi ai cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi ai cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.