Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, thong cua
trung cap » truong cao, trung tam
hoc hieu » hoc thieu, hoc hien, doc hieu
dung cua » dung luan, dung cho
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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 manh - thanh ((((trung cua) OR (dung cua))) OR (trung cap)) nhung cong tac than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh ((((trung cua) OR (dung cua))) or (trung cap)) nhung cong tac than cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh ((((trung cua) OR (dung cua))) or (trung cap)) nhung cong tac than cau*.