Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung tin hoi snippets" » "dong tin hoi snippets", "luong tin hoi snippets", "dung tren hoi snippets", "dung tin hoc snippets", "dung tan hoi snippets", "dung tin soi 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 tin hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tin hoi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tin hoi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tin hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.