Perhaps you should try some spelling variations:
chieu cao » hieu cac, hieu ca, chieu day
nhan thuc » nhan luc, dan thuc, toan thuc
thu sach » tu sach, thuat sach, thuoc sach
hieu cao » hieu cac, hieu ca, kieu cao
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
ty nang » ky nang, ty xang, ty hang
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: thu sach ty nang xa hoi. ((hieu cao) OR (chieu cao)) nhan thuc ((va danh) or (va dinh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. ((hieu cao) OR (chieu cao)) nhan thuc ((va danh) OR (va dinh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. ((hieu cao) OR (chieu cao)) nhan thuc ((va danh) or (va dinh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. ((hieu cao) OR (chieu cao)) nhan thuc ((va danh) or (va dinh)) dai cua tre*.