Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dun hang cac snippets" » "dun nang cac snippets", "dung thang cac snippets", "dung khang cac snippets", "dun hang ca snippets", "dun hang cau snippets", "dun bang 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 hang 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 hang cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun hang cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun hang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.