Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
mang cua » dung cua, ban cua, cong cua
manh cua » doanh cua, ban cua
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, khoan cam
phan cac » nhan cach, phan dau, phan lap

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 - hanh ((mang cua) OR (manh cua)) dung cong tan ((khan cap) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((mang cua) OR (manh cua)) dung cong tan ((khan cap) or (phan cac))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((mang cua) OR (manh cua)) dung cong tan ((khan cap) or (phan cac))*.