Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hay thong » hay khong, huy thong, may thong
tung hay » cung hay, tung bay, trung hai
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chiet tach)) - thanh tung hay thong cong tan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - thanh tung hay thong cong tan ((toan cao) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chiet tach)) - thanh tung hay thong cong tan ((toan cao) or (toan tap))*".