Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung nhan am slippers" » "dung luan am slippers", "dung nhan tam slippers", "dung nhan nam slippers", "dung than am slippers", "dung nhan am slippery", "dung nhan am 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 nhan am 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 nhan am slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nhan am slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nhan am slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.