Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
may nang » may nong, ky nang, cam nang
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc van » nuoc va, nuoc san, luoc van
thanh ve » hanh ve, thanh va, thanh vien
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
v nang » va nang, vu nang, van nang
ve cua » le cua, de cua, te 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: tu sach ((may nang) OR (v nang)) xa hoi. hieu va cac nuoc van thanh 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 cua triet*.