Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"cong trinh cad snippets" » "cong trinh cau snippets", "cong trinh cac snippets", "cong trinh cam snippets"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("cong trinh cad snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( cong trinh cad snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("cong trinh cad snippets"))) or ("locating bugs code snippets"))*.