Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
dung cong » dung trong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap
tung ho » tuong ho, trung hoc, trung hoa
ho dung » hoc dung, hoi dung, so dung

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