Perhaps you should try some spelling variations:
"dung cac trung slippers" » "dung cac truong slippers", "dung dac trung slippers", "dung bac trung slippers", "luong cac trung slippers", "dung cho trung slippers", "dung tai trung slippers", "dung cac trung slippery", "dung cac trung grippers"
"dung java java snippets" » "dung va java snippets"
"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 cac trung 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 cac trung slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac trung slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac trung slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.