Perhaps you should try some spelling variations:
thiet tach » chiet tach, thuat tach
thien hach » thien thanh, hien hanh
phong cong » phong chong, thong cong, chong cong
tranh cua » doanh cua, manh cua
cua phong » cua phuong, cua khong, cuu phong
dan thanh » dang thanh, danh thanh, ban thanh
cong dan » cong san, cong tan, huong dan

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: hoc ((thiet tach) OR (thien hach)) - canh tranh cua phong cong dan thanh san~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet tach) or (thien hach)) - canh tranh cua phong cong dan thanh san*.