Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
dong tinh » dong kinh, dong tin, cong tinh
ho chieu » theo chieu, hoc thieu, mot chieu
trung ca » trung cap, truong ca, trung cua
can dong » van dong, dan dong, cao dong
khan cap » khan ap, than cap, khoan cam
phan lap » phan dau
ca can » cua can, cap can, ca dan

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 ca can dong tinh ((khan cap) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ca can dong tinh ((khan cap) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ca can dong tinh ((khan cap) or (phan lap))*.