Perhaps you should try some spelling variations:
xquang tran » quang tran, quang tuan, quang toan
anh xquang » anh quang, anh quan, anh xuan
tran phung » tran phuong, trang phung, tran hung
viet sach » viet anh, dien sach, viet tech
doi viet » dai viet, hoi viet, oi viet
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
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 viet sach - anh xquang tran phung ((cong tap) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi viet sach - anh xquang tran phung ((cong tap) OR (cong tac)) toan cau*.