Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trang luan » tang luan, trang tuan, truong luan
tranh luan » trinh luan, trinh luat, doanh luan
cong thanh » dong thanh, cong trinh, cong tan
pho bac » cho bac, tho bac, kho bac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh ((trang luan) OR (tranh luan)) phuong cong thanh pho bac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trang luan) OR (tranh luan)) phuong cong thanh pho bac".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trang luan) OR (tranh luan)) phuong cong thanh pho bac*.