Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung lam mot snippets" » "dung luan mot snippets", "dung tai mot snippets", "dung dat mot snippets", "dung la mot snippets", "dung lac mot snippets", "dung lam mat 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 java java snippets") or ("dung lam mot snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung lam mot snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung lam mot snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung lam mot snippets"))) or ("locating bug code snippets"))*.