Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
nhan thuc » nhan luc, dan thuc, toan thuc
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
va thanh » gia thanh, ban thanh, va tinh
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang

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) or (thu sach)) y nang xa hoi. hieu van nhan thuc va thanh doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang xa hoi. hieu van nhan thuc va thanh doi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang xa hoi. hieu van nhan thuc va thanh doi cuu tre*.