Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi cho xe snippets" » "doi chi xe snippets", "doi co xe snippets", "doi pho xe snippets", "doi cho he snippets", "doi cho xa 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 cho xe 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 cho xe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi cho xe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi cho xe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.