Perhaps you should try some spelling variations:
"cong cong code snippets" » "cong dong code snippets", "trong cong code snippets", "dang cong code snippets", "cong cong co snippets", "cong cong che snippets", "cong cong coc snippets", "cong cong code slippers"
"dung cong code snippets" » "dung cong co snippets", "dung cong che snippets", "dung cong coc snippets", "dung trong code snippets", "dung cong code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 code snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cong code snippets") OR ("dung cong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cong code snippets ) or ( dung cong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cong code snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))*.