Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
doi chieu » doc hieu, ho chieu, mot chieu
tuong cua » truong cua, huong cua, thong cua
trinh cac » trinh cau, trinh chat, trinh chao
cac toan » cac khoan, hach toan, cac thanh
toan ban » van ban
doi chi » doi khi

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: ((((doi chieu) OR (doi chi))) OR (toc thieu)) sach - thanh tuong cua cong trinh cac toan ban~.
• Adding a wildcard symbol may retrieve word variants: ((((doi chieu) or (doi chi))) or (toc thieu)) sach - thanh tuong cua cong trinh cac toan ban*.