Perhaps you should try some spelling variations:
hanh phan » thanh phan, anh phan, hanh han
hieu van » hieu va, thien van, lieu va
phan cua » nhan cua, than cua, phat cua
ban hanh » ban hang
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
van lam » van nam
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang ((((x hoi) OR (5 hoi))) or (o hoi)). hieu van lam duc ban hanh phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((((x hoi) OR (5 hoi))) OR (o hoi)). hieu van lam duc ban hanh phan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((((x hoi) OR (5 hoi))) or (o hoi)). hieu van lam duc ban hanh phan cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((((x hoi) OR (5 hoi))) or (o hoi)). hieu van lam duc ban hanh phan cua tre*.