Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
danh hoi » danh hoa, dan hoi, danh hoc
so sach » so sanh, bo sach, co sach
cac toc » cac toi, cac thoi
hoi cua » hoi chuc
xa danh » va danh, dia danh, nam danh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ((ma hoi) or (mai hoi)). hieu ve ((cac toc) or (cac nuoc)) xa danh hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((ma hoi) OR (mai hoi)). hieu ve ((cac toc) OR (cac nuoc)) xa danh hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) or (mai hoi)). hieu ve ((cac toc) or (cac nuoc)) xa danh hoi cua tre*.