Perhaps you should try some spelling variations:
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
tong cong » trong cong, cong cong, dung cong
tuong va » truong va, thuong va, luong va
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap
tung va » trung va, dung va, vung va

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - thanh ((tung va) OR (tuong va)) tong cong tan than cao~".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - thanh ((tung va) OR (tuong va)) tong cong tan than cao*.