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

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