Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong cau co snippets" » "cong cu co snippets", "cong chuc co snippets", "thong cau co snippets", "cong cau do snippets", "cong cac co snippets", "cong cay co 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: (((("cong cau co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cau co snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cau co snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cau co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.