Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
cau tuc » cau truc, cau tu, cau luc
y nang » ky nang, ly nang, may nang
tuc va » thuc va, truc va, tuc xa
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: toc sach ((y nang) OR (v nang)) xa hoi. hieu va cau tuc va thanh dai ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) or (v nang)) xa hoi. hieu va cau tuc va thanh dai ((cua triet) OR (va triet))~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (v nang)) xa hoi. hieu va cau tuc va thanh dai ((cua triet) OR (va triet))*.