Perhaps you should try some spelling variations:
chua nang » chuc nang, chua xang, kha nang
dong luan » dung luan, tong luan, dong xuan
luan dang » luan nang, luan danh, luan dong
dang cong » dung cong
cong tinh » cong trinh, cong vinh, long tinh
chu manh » ho manh, chu han, chu van
anh dong » anh huong, anh son
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: theo ((chua nang) OR (chu manh)) - anh dong luan dang cong tinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: theo ((chua nang) or (chu manh)) - anh dong luan dang cong tinh toan ban*.