Perhaps you should try some spelling variations:
tranh trong » tran trong, trinh trong, anh trong
tong cong » trong cong, cong cong, dung cong
yen tinh » tuyen tinh
trong he » trong le, trong hiep, trong nha
van quan » van ban
he tong » he thong, he trong, he cong
van tan » van tuan, van ban, van tai
co yen » co nen, o yen, ca yen

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

• Performing a fuzzy search may retrieve terms with similar spellings: co yen tinh - tranh trong he tong cong ((van tan) or (van quan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co yen tinh - tranh trong he tong cong ((van tan) OR (van quan)) cau.
• Adding a wildcard symbol may retrieve word variants: co yen tinh - tranh trong he tong cong ((van tan) or (van quan)) cau*.