Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
tranh cua » doanh cua, manh cua
tan cao » toan cao, tao cao, tan ca
tay cao » tao cao, tay co, toan cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - hanh tranh cua ((nhung cong) or (thong cong)) van ((tan cao) OR (tay cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh tranh cua ((nhung cong) OR (thong cong)) van ((tan cao) OR (tay cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - hanh tranh cua ((nhung cong) or (thong cong)) van ((tan cao) OR (tay cao))*".