Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung la trong slippers" » "dung lam trong slippers", "dung le trong slippers", "dung ly trong slippers", "dung lai trong slippers", "dung lao trong slippers", "dung la trong slippery", "dung la 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 la 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 la trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung la trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung la trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.