Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
cuc triet » cua triet, su triet, cac trieu
hoc sach » hoc sinh, hoc cac, hoc anh
phat tai » pham tai, phap tai, chat tai
truc va » thuc va, thuc vat, trung va
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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: ((thuoc sach) OR (hoc sach)) y nang ((x hoi) OR (o hoi)). lieu va cau truc va phat tai cuc triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) y nang ((x hoi) or (o hoi)). lieu va cau truc va phat tai cuc triet~".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) y nang ((x hoi) or (o hoi)). lieu va cau truc va phat tai cuc triet*.