Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
trung cao » truong cao, trung cap, trung co
phan cong » thanh cong
cao phan » co phan, cho phan, cac phan
cong san » cong tac
than tap » han tap, phan tap, than cap
toan tap » toan ban

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: hoc ((chiet tach) OR (chieu sach)) - thanh trung cao phan cong san ((than tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) OR (chieu sach)) - thanh trung cao phan cong san ((than tap) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) OR (chieu sach)) - thanh trung cao phan cong san ((than tap) or (toan tap))*.