Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
truong cua » truong ca, truong quan, truong cao
trung cua » trung tuan, trung cap, dung cua
trai chau » tran chau, trai chan, lai chau
van cong » van dong, van phong, phan cong
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai

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 sach) or (chiet tach)) - thanh ((trung cua) OR (truong cua)) van cong tac trai chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - thanh ((trung cua) OR (truong cua)) van cong tac trai chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - thanh ((trung cua) OR (truong cua)) van cong tac trai chau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - thanh ((trung cua) OR (truong cua)) van cong tac trai chau*.