Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
lanh doanh » hanh doanh, doanh doanh, kinh doanh
cua thuong » cua truong, cua phuong, ca thuong
doanh cua » doanh luan
toc dieu » hoc dieu, soc dieu, thuoc dieu
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "toc dieu hanh - lanh doanh cua thuong cong trinh ((tran cau) OR (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: toc dieu hanh - lanh doanh cua thuong cong trinh ((tran cau) OR (toan cau))*.