Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong dot vai slippers" » "cong mot vai slippers", "cong dong vai slippers", "cong doan vai slippers", "cong det vai slippers", "cong doi vai slippers", "cong dot vai slippery", "cong dot vai 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 dot vai 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 dot vai slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dot vai slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dot vai slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.