Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien danh
trung tran » trung tuan, trung thanh, trung tam
thien anh » thien danh, tien anh, thien thanh
tran dung » tran dang, tran hung, tran quang
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
ban cau » bang cau, ban can, ban dau
van cau » van dau, van hau, van chat

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