Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo phap » thi phap
tranh cua » manh cua
doanh cua » doanh luan
theo kha » thao khoa, theo chu, thep nha
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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