Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
trung cua » truong cua, trung tuan, trung cap
cua sinh » hoa sinh, va sinh
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: dai cua sinh - thanh trung cua thuong cong tan ((thanh san) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dai cua sinh - thanh trung cua thuong cong tan ((thanh san) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: dai cua sinh - thanh trung cua thuong cong tan ((thanh san) or (toan cao))*.