Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
ho chiet » ho chieu, ho thiet, hoa thiet
tan van » tran van, tang van, luan van
van cau » van dau, van hau, van chat

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: ((ho chiet) OR (hoc thiet)) tach - canh tranh cua ((thong cong) OR (tong cong)) tan van cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (hoc thiet)) tach - canh tranh cua ((thong cong) or (tong cong)) tan van cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) OR (hoc thiet)) tach - canh tranh cua ((thong cong) or (tong cong)) tan van cau*.