Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu viec » nhieu viec, hieu ve, sieu viet
hanh dao » lanh dao, thanh dat, thanh dam
van hanh » van thanh, ban hanh, van anh
nuoc van » nuoc va, nuoc san, luoc van
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
viec cac » vien cac, viec cua, viec lam
ly nang » ky nang, ly hang, ly vang
dao cua » dai cua, day cua, dan cua
tu sach » thu sach, su sach, te sach
y nang » ky nang, v nang, may nang
ma hoi » mai hoi, ma hoa, me hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y nang) or (ly nang)) ((ma hoi) or (xa hoi)). hieu viec cac nuoc van hanh dao cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) ((ma hoi) OR (xa hoi)). hieu viec cac nuoc van hanh dao cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ly nang)) ((ma hoi) or (xa hoi)). hieu viec cac nuoc van hanh dao cua triet*.