Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
nhan dang » nhan dan, phan dang, tran dang
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
dang cua » dung cua, dong cua, mang cua

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: theo chieu sach - nhan dang cua nhung cong ((xuan toan) OR (manh toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - nhan dang cua nhung cong ((xuan toan) or (manh toan)) cau*.