Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
cua nhung » va nhung
vinh toan » tinh toan, hinh toan, vinh tran
minh toan » tinh toan, manh toan, minh tuan
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan

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 (chua xang)) - anh tang cua nhung cong ((vinh toan) OR (minh toan)) cao~.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - anh tang cua nhung cong ((vinh toan) or (minh toan)) cao*.