Perhaps you should try some spelling variations:
cua thuong » cua truong, cua phuong, ca thuong
thuong con » thuong dong, truong cong, thong cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
hoi hieu » hoi phieu, hoi tieu, moi hieu
toan cao » toan tap
toan ban » van ban
con tac » cong tac, con tap, can tac

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: hoi hieu lang - ((hanh tang) OR (hanh mang)) cua thuong con tac ((toan cao) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - ((hanh tang) or (hanh mang)) cua thuong con tac ((toan cao) or (toan ban))*.