Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
van toan » van tuan, van thanh, manh toan
ho chau » ha chau, o chau, khoa chau
van tan » van tuan, van ban, van tai
ho chu » hoi chu, cho chu, ho chua

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: ((ho chau) OR (ho chu)) tinh - hanh tranh cua nhung cong ((van toan) OR (van tan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) or (ho chu)) tinh - hanh tranh cua nhung cong ((van toan) OR (van tan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) or (ho chu)) tinh - hanh tranh cua nhung cong ((van toan) OR (van tan)) cao*.