Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung ten lang slippers" » "dung tren lang slippers", "dung tien lang slippers", "dung nen lang slippers", "dung den lang slippers", "dung yen lang slippers", "dung ten lang slippery", "dung ten lang 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 ten lang 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 ten lang slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ten lang slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ten lang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.