Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
hanh nang » ganh nang, hanh mang, hanh trang
nang cong » nang song, dang cong, bang cong
van thanh » ban thanh, van tuan
anh nang » ganh nang, anh bang, anh dang
kha nang » phap nang, ky nang, ki nang
dan toan » van toan, dan than, manh toan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: thien chinh sach - ((hanh nang) OR (anh nang)) kha nang cong ((dan toan) OR (van thanh)) cao~.
• Adding a wildcard symbol may retrieve word variants: thien chinh sach - ((hanh nang) or (anh nang)) kha nang cong ((dan toan) or (van thanh)) cao*.