Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh dinh » thanh dinh, hanh tinh, anh dinh
hinh dinh » binh dinh, trinh dinh, hinh anh
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san van » tan van, luan van, tran van

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 chieu) OR (theo tieu)) sang - ((hanh dinh) OR (hinh dinh)) cua thong cong san van ban~.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) sang - ((hanh dinh) or (hinh dinh)) cua thong cong san van ban*.