Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung do ung slippers" » "dung doi ung slippers", "dung co ung slippers", "dung de ung slippers", "dung do luong slippers", "dung do trung slippers", "dung do quang slippers", "dung do ung slippery", "dung do ung 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 do ung 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 do ung slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung do ung slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung do ung slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.