Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo phap » thi phap
phap sinh » phau sinh, phai sinh, phap tinh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tang cua » mang cua, hang cua, tang luan
ly toan » ly tran, ly doanh, huy toan
le toan » ke toan, le doan, le tuan
ly hoan » ly hoa, ly hoat, ly doanh

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 sinh - hanh tang cua nhung cong ((((ly toan) OR (le toan))) OR (ly hoan)) tap~.
• Adding a wildcard symbol may retrieve word variants: theo phap sinh - hanh tang cua nhung cong ((((ly toan) or (le toan))) or (ly hoan)) tap*.