Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
triet tinh » trieu tinh, trien tinh, trien kinh
cong thanh » dong thanh, cong trinh, cong tan
mao triet » tao thiet, va triet, bo triet
doanh cua » doanh luan
cong than » cong thang, cong tan, cong thai
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: mao triet tinh - doanh doanh cua cong ((cong than) or (cong thanh)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mao triet tinh - doanh doanh cua cong ((cong than) OR (cong thanh)) phan cac.
• Adding a wildcard symbol may retrieve word variants: mao triet tinh - doanh doanh cua cong ((cong than) or (cong thanh)) phan cac*.