Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trong » hanh trang, anh trong, hinh trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
trong dai » truong dai, trong doi, trong dam
tong cong » trong cong, cong cong, dung cong
cong dang » cong dong, cong dan, cong dung
dang toan » dang tran, dan toan, dung toan
dai tong » dai tuong, dai trong, tai tong
toan cau » toan cao, toan ban, toan tap

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: hoc ((((hieu manh) OR (chieu sach))) OR (hieu lang)) - hanh trong dai tong cong dang toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) or (chieu sach))) or (hieu lang)) - hanh trong dai tong cong dang toan cau*.