Perhaps you should try some spelling variations:
dung tuong » dung thuong, dung truong, dung trong
doi chieu » doc hieu, doi chi, mot chieu
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
tuong tac » cong tac, luong tai, tuong lai
ho chieu » theo chieu, hoc thieu, mot chieu
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - thanh ((tran tuan) or (tran xuan)) dung tuong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - thanh ((tran tuan) OR (tran xuan)) dung tuong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - thanh ((tran tuan) or (tran xuan)) dung tuong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - thanh ((tran tuan) or (tran xuan)) dung tuong tac toan ban*.