Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
hoc hieu » hoc thieu, hoc hien, doc hieu
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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 - hanh tranh cua ((nhung cong) OR (((hang cong) OR (hang nong)))) dan chan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh tranh cua ((nhung cong) or (((hang cong) OR (hang nong)))) dan chan tu~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh tranh cua ((nhung cong) or (((hang cong) OR (hang nong)))) dan chan tu*.