Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien danh
trung tuan » trung thanh, trung tam, tran tuan
thien anh » thien danh, tien anh, thien thanh
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

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