Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong li mat slippers" » "cong ti mat slippers", "hong li mat slippers", "cong hai mat slippers", "cong bi mat slippers", "cong li may slippers", "cong ly mat slippers", "cong li mat slippery", "cong li mat 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 li mat 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 li mat slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong li mat slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong li mat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.