Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
theo chinh » thien chinh, te chinh, che chinh
trang tuan » tran tuan, trung tuan, trong tuan
trinh phan » trinh han, trinh quan, thanh phan
tang luan » dung luan
trinh pho » trinh cho, trinh chao, trinh phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chinh sach - hanh ((trang tuan) or (tang luan)) phuong cong ((trinh pho) OR (trinh phan)) bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chinh sach - hanh ((trang tuan) OR (tang luan)) phuong cong ((trinh pho) OR (trinh phan)) bac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chinh sach - hanh ((trang tuan) or (tang luan)) phuong cong ((trinh pho) OR (trinh phan)) bac".
• Adding a wildcard symbol may retrieve word variants: theo chinh sach - hanh ((trang tuan) or (tang luan)) phuong cong ((trinh pho) OR (trinh phan)) bac*.