Perhaps you should try some spelling variations:
chinh tham » chinh nham, chinh tai, hinh thai
hieu cach » hieu cac, chieu sach, hieu ca
tham dung » pham dung, tham cung, tham nhung
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
tay cao » tao cao, tay co, toan cao
tan ca » tan cua, tang ca, dan ca

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 hieu cach - hanh chinh tham dung cong san ((tan ca) OR (tay cao))~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - hanh chinh tham dung cong san ((tan ca) or (tay cao))*.