Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh tuong » thanh thuong, thanh tung, thanh huong
hien xanh » hien hanh, hien nhanh, chieu xanh
tuong tac » cong tac, luong tai, tuong lai
tac trong » cay trong, hoc trong
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan cau » phan dau, phan cac, phan tu

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 (thien thanh)) - thanh tuong tac trong cong van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (thien thanh)) - thanh tuong tac trong cong van phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (thien thanh)) - thanh tuong tac trong cong van phan cau*.