Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, truong thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
tran tuan » tran xuan, tran quang, tran thanh
cuong tap » luong tap, cong tac, luong tai
cong tap » cong tac, cong tan, tong tap
toan cau » toan cao, toan ban, toan tap

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 chieu xanh - manh ((trung tuan) OR (tran tuan)) hung ((cong tap) OR (cuong tap)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - manh ((trung tuan) OR (tran tuan)) hung ((cong tap) or (cuong tap)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - manh ((trung tuan) OR (tran tuan)) hung ((cong tap) or (cuong tap)) toan cau*.