Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung ro trong slippers" » "dung dot trong slippers", "dung co trong slippers", "dung mo trong slippers", "dung so trong slippers", "dung ro trong slippery", "dung ro trong 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 ro trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ro trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ro trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ro trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.