Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
luat bat » luat dat, luat bao, luat dan
thanh ve » hanh ve, thanh va, thanh vien
hieu va » lieu va, hieu qua
luc bat » suc bat, luc nhat, duoc bat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, dua tren
va cao » va cac, va co, va dao
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: thuoc sach y nang xa hoi. hieu va cao ((luc bat) OR (luat bat)) thanh ve ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang xa hoi. hieu va cao ((luc bat) OR (luat bat)) thanh ve ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang xa hoi. hieu va cao ((luc bat) OR (luat bat)) thanh ve ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang xa hoi. hieu va cao ((luc bat) OR (luat bat)) thanh ve ((cua tre) or (cua triet))*.