Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung cong qi slippers" » "dung trong qi slippers", "dung cong li slippers", "dung cong ti slippers", "dung cong bi slippers", "dung cong qi slippery", "dung cong qi 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: (((("dung cong qi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cong qi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cong qi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong qi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.