Perhaps you should try some spelling variations:
tien chinh » thien chinh, tien thinh, dien chinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tien chinh sach - hanh tranh cua hang cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tien chinh sach - hanh tranh cua hang cong dan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: tien chinh sach - hanh tranh cua hang cong dan ((toan cao) or (toan tap))*.