Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trac ho doc snippets" » "trac hoc doc snippets", "trao ho doc snippets", "trac nha doc snippets", "trac hoa doc snippets", "trac ho duc snippets", "trac co 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: (((("trac ho 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: (((("trac ho doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trac ho doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trac ho doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.