Perhaps you should try some spelling variations:
"cong dung coc snippets" » "cuong dung coc snippets", "cong dong coc snippets", "cong luong coc snippets", "cong dung co snippets", "cong dung cac snippets", "cong dung hoc snippets"
"cong dung trong snippets" » "cuong dung trong snippets", "cong dong trong snippets", "cong luong trong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cong dung coc snippets") or ("cong dung trong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong dung coc snippets") OR ("cong dung trong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dung coc snippets ) or ( cong dung trong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dung coc snippets") or ("cong dung trong snippets"))) or ("locating bug code snippets"))*.