Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cong huong » cong thuong, cong luong, cong hung
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, trung cap
toan ban » van ban
toan cao » toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (hieu manh)) - thanh trung cua cong huong dan ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu manh)) - thanh trung cua cong huong dan ((toan ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu manh)) - thanh trung cua cong huong dan ((toan ban) or (toan cao))*.