Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, nhung don
hoc chiet » hoc thiet, hoc hien, hoc viet
hoc nhiet » hoc thiet, hoc nghien, hoc hien
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
ban cau » bang cau, ban can, van cau

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

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