Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hieu lang » chieu sang, hieu quang, nhieu tang
tong cong » trong cong, cong cong, dung cong
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
doc hieu » toc thieu, hoc thieu, hoc hien
hoan cua » hoa cua, toan cua, han cua
cua tong » cua cong, cua dong, cua nong
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - doanh hoan cua tong cong ban ((thanh cau) OR (thanh mau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu lang - doanh hoan cua tong cong ban ((thanh cau) OR (thanh mau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - doanh hoan cua tong cong ban ((thanh cau) OR (thanh mau))*.