Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
doanh than » doanh thanh, doanh nhan, doanh phan
cua truong » cua trung, xuan truong, cac truong
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
than cua » nhan cua, thai cua, ban cua
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - doanh than cua truong cong dan ((than cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - doanh than cua truong cong dan ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - doanh than cua truong cong dan ((than cau) OR (phan cau))*.