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