Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
nhung van » phung van, nhung bai, nhung cau
hang cong » dang cong, hang nong, bang cong
ho hieu » ho chieu, hoi hieu, nho hieu
tap cau » tap cac, tao cau, ta cau

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: ho hieu lang - hanh tranh cua ((((nhung van) OR (hang cong))) OR (thong thong)) bai tap cau~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tranh cua ((((nhung van) or (hang cong))) or (thong thong)) bai tap cau*.