Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, hien hanh
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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 ((((hieu manh) OR (dieu hanh))) OR (hieu lang)) - anh tang cua nhung cong dan phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((hieu manh) OR (dieu hanh))) or (hieu lang)) - anh tang cua nhung cong dan phan tu~".
• Adding a wildcard symbol may retrieve word variants: theo ((((hieu manh) OR (dieu hanh))) or (hieu lang)) - anh tang cua nhung cong dan phan tu*.