Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trung tran » trung tuan, trung thanh, trung tam
tran tong » tran trong, tran thong, tran tuong
tong cong » trong cong, cong cong, dung cong
tan phan » toan phan, than phan, tai phan
van phan » van phong, van thanh, luan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (thien thanh)) - thanh trung tran tong cong ((tan phan) OR (van phan)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien thanh)) - thanh trung tran tong cong ((tan phan) OR (van phan)) dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien thanh)) - thanh trung tran tong cong ((tan phan) OR (van phan)) dau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - thanh trung tran tong cong ((tan phan) OR (van phan)) dau*.