Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ly quang » le quang, vu quang
nam thuc » nam thuoc, am thuc, nam thu
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
hieu ve » hieu van
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ty xang) or (ly quang)) xa hoi. ((hieu ve) or (hieu va)) nam thuc va hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty xang) OR (ly quang)) xa hoi. ((hieu ve) OR (hieu va)) nam thuc va hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty xang) or (ly quang)) xa hoi. ((hieu ve) or (hieu va)) nam thuc va hanh di cua triet*.