Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach
vu sach » vu bach, vu khach
cac hoc » cach hoc, cac hop, bac hoc
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v 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: ((su sach) OR (vu sach)) y nang ((ma hoi) or (xa hoi)). lieu va cac hoc va thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang ((ma hoi) OR (xa hoi)). lieu va cac hoc va thanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang ((ma hoi) or (xa hoi)). lieu va cac hoc va thanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang ((ma hoi) or (xa hoi)). lieu va cac hoc va thanh vai cua triet*.