Perhaps you should try some spelling variations:
"using dung tri slippers" » "ung dung tri slippers", "sinh dung tri slippers", "using usg tri slippers", "using dung tai slippers", "using dung tren slippers", "using nhung tri slippers", "using dung tri slippery", "using dung tri 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"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("using dung tri slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("using dung tri slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( using dung tri slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("using dung tri slippers"))) or ("locating bug code snippets"))*.