Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trang » thanh trung, hanh trinh, minh trang
cong cong » cong dong, trong cong, dung cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: "hoc hien nhanh - ((hanh trang) OR (canh tranh)) cua cong cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((hanh trang) OR (canh tranh)) cua cong cong tan toan cau*.