Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cap nhung » cam nhung, vap nhung, dap nhung
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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: ho chiet tach - ((thanh trung) OR (thanh tung)) cap nhung cong san ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((thanh trung) OR (thanh tung)) cap nhung cong san ((than cau) or (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((thanh trung) OR (thanh tung)) cap nhung cong san ((than cau) or (toan cau))*.