Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong tan
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua
tung va » trung va, tuong va, vung va

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 - thanh ((tung va) or (dung va)) thong cong ban ((khan cap) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tung va) OR (dung va)) thong cong ban ((khan cap) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tung va) or (dung va)) thong cong ban ((khan cap) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung va) or (dung va)) thong cong ban ((khan cap) OR (than cap))*.