Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
thai cua » than cua, tai cuc, tri cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
xuc van » luc van, xuc ban, thuc van
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 o hoi. hieu ((van cac) OR (van hac)) ((xuc van) or (duc van)) nhanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang o hoi. hieu ((van cac) OR (van hac)) ((xuc van) OR (duc van)) nhanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang o hoi. hieu ((van cac) OR (van hac)) ((xuc van) or (duc van)) nhanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang o hoi. hieu ((van cac) OR (van hac)) ((xuc van) or (duc van)) nhanh thai cua tre*.