Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
thong cong » trong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
dan than » dan chan, ban than, van than
than man » than ma, thanh san, tran manh

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 tranh cua ((thong cong) OR (tong cong)) dan than man~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tranh cua ((thong cong) or (tong cong)) dan than man*.