Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thang cong » thanh cong, thang long, hang cong
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, mot chieu
tuong tac » cong tac, luong tai, tuong lai
van khang » van khanh, van thanh, van quang
khang cap » khan cap, khang chan, hang ca
tung tat » trung tam, vuong tat, trung tai

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 sach - thanh ((tung tat) OR (tuong tac)) ((thang cong) OR (thong cong)) van khang cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((tung tat) or (tuong tac)) ((thang cong) OR (thong cong)) van khang cap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((tung tat) or (tuong tac)) ((thang cong) OR (thong cong)) van khang cap*.