Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoang cao » hoang bao, hoang hao, hoang thao
hoc hieu » hoc thieu, hoc hien, doc hieu
cong ban » cong bang, cong san, cong tan
hang cau » hang dau, nhung cau, nang cao
hang ca » hang va, nang cao, hang tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh tranh cua nhung cong ban ((((hang ca) or (hang cau))) or (hoang cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh tranh cua nhung cong ban ((((hang ca) OR (hang cau))) OR (hoang cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh tranh cua nhung cong ban ((((hang ca) or (hang cau))) or (hoang cao))*.