Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh thi » tranh thai, tran thi, trinh thi
hanh cong » thanh cong, hang cong, hanh dong
thi hanh » thi thanh
cong tac » cong ty
gian cau » gian chau, gian cam, gian cu
gian cac » gian dan, gian 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: ho ((hieu manh) OR (chieu sach)) - canh tranh thi hanh cong tac ((gian cau) OR (gian cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sach)) - canh tranh thi hanh cong tac ((gian cau) OR (gian cac))~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - canh tranh thi hanh cong tac ((gian cau) OR (gian cac))*.