Perhaps you should try some spelling variations:
chau tinh » ha tinh, cuu tinh, cua tinh
hanh dung » thanh dung, anh dung, hanh dong
van phong » van dong, hai phong
phong tac » phong tuc, phong cac, phong tai
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
ho chau » ha chau, ho chu, o chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chau tinh - hanh dung (luan OR lan) van phong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - hanh dung (luan OR lan) van phong tac toan tap*".