Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sang » chieu sach, chieu xanh, hieu lang
hang doanh » hanh doanh, nhung doanh, van doanh
cua phuong » cuu phuong, cuc phuong, luan phuong
doanh cua » doanh luan
ho chieu » theo chieu, hoc thieu, mot chieu
cong tac » cong ty
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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 sang - hang doanh cua phuong cong tac ((han tap) OR (toan tap))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hang doanh cua phuong cong tac ((han tap) or (toan tap))*.