Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh tuong » thanh thuong, thanh tung, thanh huong
hien nhanh » hien hanh, tien thanh, dien thanh
tuong cua » truong cua, huong cua, thong cua
dong cong » duong cong, dung cong, dang cong
van thanh » ban thanh, van tuan
cua dong » chua dong, cua cong, cua dang
dan than » dan chan, ban than, van than

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 nhanh) or (thien thanh)) - thanh tuong cua dong cong ((dan than) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (thien thanh)) - thanh tuong cua dong cong ((dan than) OR (van thanh)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (thien thanh)) - thanh tuong cua dong cong ((dan than) or (van thanh)) cao*.