Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien sach » kien sach, thien hach, chieu sach
dien sach » dien anh
trung cap » truong cao, trung tam
hang cong » dang cong, hang nong, bang cong
cap hang » cap hoang, cap bang, cap han
cong san » cong tac
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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 ((hien sach) OR (dien sach)) - thanh trung cap hang cong san ((han tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) OR (dien sach)) - thanh trung cap hang cong san ((han tap) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) OR (dien sach)) - thanh trung cap hang cong san ((han tap) or (toan tap))*.