Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
tong duong » tuong duong, thong duong, dong duong
thanh toan » thanh hoa, thanh san, tinh toan
manh toan » anh tuan, tinh toan
tung cuu » trung cua, trung cau, tuong cua
cuu tong » cuu cong, cuu tinh, huu tung

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 (chieu xanh)) - thanh tung cuu tong duong ((manh toan) OR (thanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - thanh tung cuu tong duong ((manh toan) OR (thanh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - thanh tung cuu tong duong ((manh toan) OR (thanh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - thanh tung cuu tong duong ((manh toan) OR (thanh toan)) cao*.