Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh toan » thanh hoa, thanh san, tinh toan
hieu manh » hieu nganh, dieu hanh, hien hanh
trung qua » trung quan, trong qua, truong quan
trung cua » truong cua, trung tuan, trung cap
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 ((hieu manh) OR (chieu xanh)) - thanh ((trung qua) or (trung cua)) dung trong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh ((trung qua) OR (trung cua)) dung trong thanh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (chieu xanh)) - thanh ((trung qua) or (trung cua)) dung trong thanh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (chieu xanh)) - thanh ((trung qua) or (trung cua)) dung trong thanh toan cao*.