Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
hanh van » thanh van, khanh van, hanh va
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
van cua » vang cua, ban cua, dan cua
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
tang xa » trang xa, tang ma, lang xa
so sach » so sanh, bo sach, co sach
nam xuc » cam xuc, nam xua, nam duoc

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) or (so sach)) kho tang xa hoi. hieu van ((nam xuc) OR (nam thuc)) va hanh van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) kho tang xa hoi. hieu van ((nam xuc) OR (nam thuc)) va hanh van cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) kho tang xa hoi. hieu van ((nam xuc) OR (nam thuc)) va hanh van cua triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) kho tang xa hoi. hieu van ((nam xuc) OR (nam thuc)) va hanh van cua triet*.