Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
manh cua » doanh cua, ban cua
nhung bo » nhung bi, nhung bai, nhung don
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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 tinh - canh manh cua ((nhung bo) OR (dung trong)) ((dan toan) OR (van toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh manh cua ((nhung bo) or (dung trong)) ((dan toan) or (van toan)) cau*.