Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu cao » chieu cao, hieu cac, hieu ca
thuc dan » thuc hanh, hoc dan, thuc vat
danh dai » danh dau, danh di, danh sai
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc day
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. hieu cao chat ((thuc va) OR (thuc dan)) danh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. hieu cao chat ((thuc va) OR (thuc dan)) danh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu cao chat ((thuc va) OR (thuc dan)) danh dai cua tre*.