Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong vi trac slippers" » "chong vi trac slippers", "cong va trac slippers", "cong li trac slippers", "cong hoi trac slippers", "cong vi trac slippery", "cong vi 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: (((("cong vi 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: (((("cong vi trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong vi trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vi trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.