Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
doc chiet » doc hieu, hoc thiet, doc chat
trung cua » truong cua, trung tuan, trung cap
cong cong » cong dong, trong cong, dung cong
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan dan » phan dau, gian dan, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chiet tach - thanh trung cua cong cong tac nhan dan~.
• Adding a wildcard symbol may retrieve word variants: doc chiet tach - thanh trung cua cong cong tac nhan dan*.