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