Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung san thi slippers" » "dong san thi slippers", "dung sai thi slippers", "dung luan thi slippers", "dung dan thi slippers", "dung van thi slippers", "dung ban thi slippers", "dung san thi slippery", "dung san thi 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 java java snippets") or ("dung san thi slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung san thi slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung san thi slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung san thi slippers"))) or ("locating bug code snippets"))*.