Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
chu manh » ho manh, chu han, chu van
cong tac » cong ty
tang ca » tang cua, hang ca, tang ma
tan ca » tan cua, dan ca, tan ha

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 ((chuc danh) OR (chu manh)) - thanh trung cua nhung cong tac ((tan ca) OR (tang ca))~.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chu manh)) - thanh trung cua nhung cong tac ((tan ca) or (tang ca))*.