Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu quan » hieu qua, lieu quan, thien quan
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dong » chua dong, cua cong, cua dang
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu quan - hanh trinh cua dong cong ((xuan toan) or (van toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu quan - hanh trinh cua dong cong ((xuan toan) OR (van toan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc hieu quan - hanh trinh cua dong cong ((xuan toan) or (van toan)) tap*.