Perhaps you should try some spelling variations:
nhanh thi » nhanh thai, nhanh thuc, nhan tai
van nhanh » van thanh, van hanh, van khanh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cau xuc » cam xuc, cau luc, cau truc
cua tre » cua te, cua triet, dua tren
xuc van » duc van, luc van, vuc van
van cau » van dau, van hau, van chat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cuu tre » cau tren, cau treo
co hoi » co hoc, co loi
o hoi » o hoc, o hai, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ((o hoi) or (co hoi)). hieu van cau xuc van nhanh thi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((o hoi) OR (co hoi)). hieu van cau xuc van nhanh thi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang ((o hoi) or (co hoi)). hieu van cau xuc van nhanh thi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((o hoi) or (co hoi)). hieu van cau xuc van nhanh thi ((cua tre) OR (cuu tre))*.