Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, thong thong, phong chong
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
hanh dong » anh dong, ha dong
dong luan » dung luan, tong luan, dong xuan
tong cong » trong cong, cong cong, dung cong
toan tap » toan ban
ly toan » le toan, ly hoan, ly tran

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 phap tinh - hanh dong luan ((nhung cong) OR (((thong cong) OR (tong cong)))) ly toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo phap tinh - hanh dong luan ((nhung cong) or (((thong cong) OR (tong cong)))) ly toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - hanh dong luan ((nhung cong) or (((thong cong) OR (tong cong)))) ly toan tap*.