Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
han tai » hang tai, nhan tai, van tai
tai cua » thai cua, tai cuc, tri cua
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
va cau » van cau, va cac, va dau

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: tu sach ((y nang) OR (v nang)) xa hoi. lieu va cau ((truc va) OR (thuc va)) han tai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (v nang)) xa hoi. lieu va cau ((truc va) or (thuc va)) han tai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (v nang)) xa hoi. lieu va cau ((truc va) or (thuc va)) han tai cua triet*.