Perhaps you should try some spelling variations:
quang trung » truong trung
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
quang tran » quang tuan, quang thanh, quang tri
doi chieu » doc hieu, doi chi, mot chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: doi chieu sach - anh ((quang tran) or (quang trung)) phuong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh ((quang tran) OR (quang trung)) phuong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh ((quang tran) or (quang trung)) phuong cong tac toan cau*.