Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
thanh tuong » thanh thuong, thanh tung, thanh huong
tien thanh » tien thinh, tran thanh, den thanh
tuong cua » truong cua, huong cua, thong cua
trong dan » trong dang, trong san, trong tan
cua dung » cua dang, cua dong, qua dung
dan toan » van toan, dan than, manh toan
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 ((thien thanh) or (tien thanh)) - thanh tuong cua dung trong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (tien thanh)) - thanh tuong cua dung trong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (tien thanh)) - thanh tuong cua dung trong dan toan cao*.