Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cao » truong cao, trung cap, trung co
dong cong » duong cong, dung cong, dang cong
trien cay » tren cay, trien cac, trien cam
ho chieu » theo chieu, hoc thieu, doi chieu
cao dong » cao dang, lao dong, cao cong
cong tac » cong ty
tren tau » tren thuc, tren may, tren dat

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 - thanh trung cao dong cong tac ((trien cay) or (tren tau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cao dong cong tac ((trien cay) OR (tren tau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cao dong cong tac ((trien cay) or (tren tau))*.