Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh ve » thanh va, thanh vien, thanh van
nuoc van » nuoc va, nuoc san, luoc van
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
may nang » may nong, ky nang, cam nang
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem
tu sach » thu sach, su sach, te sach
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 ((may nang) OR (v nang)) xa hoi. hieu va cac nuoc van ((thanh ve) OR (hanh ve)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((may nang) or (v nang)) xa hoi. hieu va cac nuoc van ((thanh ve) OR (hanh ve)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nang) or (v nang)) xa hoi. hieu va cac nuoc van ((thanh ve) OR (hanh ve)) cua triet*.