Perhaps you should try some spelling variations:
"trinh co cong snippets" » "trinh do cong snippets", "trinh cong cong snippets", "trinh hoa cong snippets", "trinh cao cong snippets", "trinh cho cong snippets", "trinh bo cong snippets"
"trong cac code snippets" » "trong cac cong snippets", "trong cac co snippets", "trong cac che snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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: (((("trinh co cong snippets") OR ("trong cac code snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( trinh co cong snippets ) or ( trong cac code snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh co cong snippets") or ("trong cac code snippets"))) or ("locating bug code snippets"))*.