Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
tong cong » cong cong, dung cong, dang cong
nhan cach » phan cac
ho chieu » theo chieu, hoc thieu, doi chieu
phan cau » phan dau, phan cac, phan tu

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 trung cua ((tong cong) OR (trong cong)) dan ((phan cau) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cua ((tong cong) OR (trong cong)) dan ((phan cau) OR (nhan cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung cua ((tong cong) OR (trong cong)) dan ((phan cau) or (nhan cach))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cua ((tong cong) OR (trong cong)) dan ((phan cau) or (nhan cach))*.