Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang xay » dang xay, nganh xay, nang xuan
bo sach » co sach, hoc sach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
xay hoi » xa hoi, tay hoi, cay phoi
qua hai » qua hoat
chuc va » thuc va, thuc vat
cuc va » duc va, cuu va, cu va
vi cua » vai cua, di cua

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: ((bo sach) OR (hoc anh)) ky nang xay hoi. hieu qua hai ((cuc va) OR (chuc va)) hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sach) or (hoc anh)) ky nang xay hoi. hieu qua hai ((cuc va) OR (chuc va)) hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((bo sach) or (hoc anh)) ky nang xay hoi. hieu qua hai ((cuc va) OR (chuc va)) hanh vi cua triet*.