Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi va trac slippers" » "doi va tac slippers", "doi tap trac slippers", "hoi va trac slippers", "noi va trac slippers", "dai va trac slippers", "doi va trac slippery", "doi va trac grippers"
"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 va trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi va trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi va trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi va trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.