Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, tran tuan
phuong van » phung van, phuong lan, phuong va
hien xanh » hien hanh, hien nhanh, hien khanh
tuan dung » tuan duong, tran dung, tan dung
phong van » phung van, thong van, phong va
toan cau » toan cao, toan ban, toan tap

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