Perhaps you should try some spelling variations:
truong phuong » truong chung, truong trung, dung phuong
phuong dan » phuong danh, phuong doan, huong dan
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cac » trinh cac, thanh cac, tranh cai
doi hieu » doi chieu, doc hieu, doi hien
toan ban » van ban
thanh va » thanh van, hanh va, thanh ha

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: doi hieu lang - canh tranh cac truong phuong dan ((toan ban) OR (thanh va))~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - canh tranh cac truong phuong dan ((toan ban) or (thanh va))*.