Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
xuan tran » xuan trang, xuan toan, xuan tan
tran hung » tran hong, tran quang, tran hoang
hung cong » nhung cong, hung cuong, phung cong
anh xuan » anh tuan, anh quan, thanh xuan
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) or (chieu xanh)) - anh xuan tran hung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu xanh)) - anh xuan tran hung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu xanh)) - anh xuan tran hung cong tac toan cau*.