Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tranh » canh tranh, hanh trinh, hanh trang
theo phap » thi phap
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
theo kha » thao khoa, theo chu, thep nha
tap toan » tap doan, bai toan
tap quan » tac quan, hai quan

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: ((theo kha) OR (theo phap)) nang - hanh tranh cua thong cong ((tap toan) OR (tap quan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo kha) or (theo phap)) nang - hanh tranh cua thong cong ((tap toan) OR (tap quan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo kha) or (theo phap)) nang - hanh tranh cua thong cong ((tap toan) OR (tap quan)) cao*.