Perhaps you should try some spelling variations:
bang cac » nang cao, hang ca, dung cac
cac phoi » cac thoi, cac khoi, cap phoi
tu cach » tu cac
su sach » so sach, vu sach
ky bang » ky nang, ky dang, ke bang
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky bang cac phoi. lieu va cac duc va hanh di ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky bang cac phoi. lieu va cac duc va hanh di ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky bang cac phoi. lieu va cac duc va hanh di ((cua tre) or (cua te))*.