Perhaps you should try some spelling variations:
"cong thuc code snippets" » "cong tac code snippets", "cong thuc co snippets", "cong thuc con snippets", "cong thuc code slippers"
"cong cua code snippets" » "cong cu code snippets", "dong cua code snippets", "huong cua code snippets", "cong cua cong snippets", "cong cua co snippets", "cong cfd code snippets", "cong cua 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 cua code snippets") or ("cong thuc code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cua code snippets") OR ("cong thuc code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cua code snippets ) or ( cong thuc code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cua code snippets") or ("cong thuc code snippets"))) or ("locating bug code snippets"))*.