Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dun nang cac snippets" » "dung nang cac snippets", "den nang cac snippets", "luan nang cac snippets", "dun nang cao snippets", "dun bang cac snippets", "dun hang cac 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: (((("dun nang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun nang cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun nang cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun nang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.