Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung co nh3 slippers" » "dung cho nh3 slippers", "dung cong nh3 slippers", "dung cua nh3 slippers", "dung co nh3 slippery", "dung co nh3 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 co nh3 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 co nh3 slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung co nh3 slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung co nh3 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.