Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cua triet » cua viet, su triet, va triet
hanh tri » thanh tri, hanh tai, hanh triet
tu sach » thu sach, su sach, te sach
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, x ho

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