Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
can cau » ban cau, ca cau, cac cau
van cau » van dau, van hau, van chat

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