Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
tam toan » tap toan, pham toan, tam thanh
tam than » ban than

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 chieu) OR (thi chieu)) tinh - canh tranh cua nhung cong ((tam toan) OR (tam than)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi chieu)) tinh - canh tranh cua nhung cong ((tam toan) OR (tam than)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) tinh - canh tranh cua nhung cong ((tam toan) OR (tam than)) cao*.