Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » ho chieu, theo chu, thi chieu
hanh dung » thanh dung, anh dung, hanh dong
cua thong » cua thuong, cua khong, cua tong
dung cua » dung luan, dung cho
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo tieu)) sach - hanh dung cua thong cong ((van toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - hanh dung cua thong cong ((van toan) OR (dan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - hanh dung cua thong cong ((van toan) or (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - hanh dung cua thong cong ((van toan) or (dan than)) cau*.