Perhaps you should try some spelling variations:
dang phuong » bang phuong, dung phuong, dan phuong
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, mot chieu
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, mot chieu
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) sach - thanh tung cua dang phuong ((manh toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - thanh tung cua dang phuong ((manh toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) sach - thanh tung cua dang phuong ((manh toan) or (van toan)) cao*.