Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
thanh vai » thanh van, thanh tai, thanh oai
vuc van » duc van, luc van, thuc van
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
cac vuc » cac nuoc, cac vung, cac cuoc
y nang » ky nang, ly nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang

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)) ma hoi. hieu va cac vuc van ((thanh vai) OR (thanh hai)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (v nang)) ma hoi. hieu va cac vuc van ((thanh vai) OR (thanh hai)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) ma hoi. hieu va cac vuc van ((thanh vai) OR (thanh hai)) cua triet*.