Perhaps you should try some spelling variations:
"trinh cad code snippets" » "trinh cau code snippets", "trinh cac code snippets", "trinh cam code snippets", "trinh cfd code snippets", "trinh cad model snippets"
"dung cac co snippets" » "luong cac co snippets", "dung cho co snippets", "dung tai co snippets", "dung cac cong 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung cac co snippets\") OR (\"trinh cad code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cac co snippets ) OR ( trinh cad code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cac co snippets") OR ("trinh cad code snippets"))) OR ("locating bug code snippets"))*.