Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
lan tranh » lanh tranh, luan tranh, can tranh
cua thong » cua thuong, cua khong, cua tong
chi tinh » chai tinh, chi minh, chi binh
cong tan » cong tac, cong san, cong thanh
tan doan » tran doan, tap doan, van doan
doan cap » doanh cao, dan ca, toan cao
doi chi » doi khi

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: doi chi tinh - ((((hanh tranh) OR (lan tranh))) OR (hanh trinh)) cua thong cong tan doan cap~.
• Adding a wildcard symbol may retrieve word variants: doi chi tinh - ((((hanh tranh) or (lan tranh))) or (hanh trinh)) cua thong cong tan doan cap*.