Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
phap nguoi » phau nguoi, phap nuoi, phai nguoi
hanh vai » hanh vi, hanh va, hanh tai
nguoi va » nguoi ma, nguoi tay, nguoi dao
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
va phap » va phat, ban phap
tu cach » tu cac
cua tre » cua te, cuu tre, cua triet
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 (thuat sach)) ky nang ((x hoi) OR (o hoi)). hieu va phap nguoi va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuat sach)) ky nang ((x hoi) OR (o hoi)). hieu va phap nguoi va hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuat sach)) ky nang ((x hoi) OR (o hoi)). hieu va phap nguoi va hanh vai cua tre*".