Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
thang cua » thong cua, hang cua, thang mua
than cua » nhan cua, thai cua, ban cua
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 thien hach - hanh ((((thang cua) OR (than cua))) OR (tang cua)) nhung cong san toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh ((((thang cua) or (than cua))) or (tang cua)) nhung cong san toan ban*.