Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
vu sach » vu bach, vu khach
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
su sach » so sach
va nam » van nam, ha nam, va nay
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho
o hoc » co hoc, mo hoc, so hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (vu sach)) y nang ((x hoi) OR (o hoc)). hieu va nam thuc van hanh di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang ((x hoi) OR (o hoc)). hieu va nam thuc van hanh di cua triet*".