Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
hang cua » hang ca, huong cua, thong cua
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
toan cao » toan tap
toan ban » van ban

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 chieu sach - hanh ((hang cua) OR (mang cua)) nhung cong tac ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((hang cua) OR (mang cua)) nhung cong tac ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((hang cua) OR (mang cua)) nhung cong tac ((toan cao) or (toan ban))*.