Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
cong tran » cong tan, cong tuan, cong toan
cua tong » cua cong, cua dong, cua nong
tran van » luan van
van dau » van dao, phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - thanh trung cua tong cong tran van dau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung cua tong cong tran van dau*.