Perhaps you should try some spelling variations:
hieu cac » hieu luc, hieu va, hieu van
danh dai » danh dau, danh di, danh sai
hieu cao » chieu cao, hieu ca, kieu cao
cap truc » cau truc, tap trac, tap tuc
tu sach » thu sach, su sach, te sach
dai cuu » dai cua, dai huu
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
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 sach ky nang ((x hoi) or (o hoi)). ((hieu cao) or (hieu cac)) cap truc va danh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((x hoi) OR (o hoi)). ((hieu cao) OR (hieu cac)) cap truc va danh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((x hoi) or (o hoi)). ((hieu cao) or (hieu cac)) cap truc va danh dai cuu tre*.