Perhaps you should try some spelling variations:
trinh thoai » trinh thoi, trinh hoa, trinh toan
thanh tung » thanh cong
doi chieu » doc hieu, ho chieu, mot chieu
thoai cac » tai cac, thong cac, tho cac
va trong » va truong, va thong, va tuong
doi chi » doi khi
tung va » trung va, tuong va, dung va

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 (doi chi)) sach - thanh tung va trong cong trinh thoai cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - thanh tung va trong cong trinh thoai cac.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - thanh tung va trong cong trinh thoai cac*.