Perhaps you should try some spelling variations:
hieu cao » chieu cao, hieu cac, hieu ca
danh dau » lanh dao, hang dau, danh tu
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
truc va » thuc va, trung va
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu cao chat ((truc va) OR (thuc vat)) danh dau cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu cao chat ((truc va) or (thuc vat)) danh dau cua tre*.