Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
sach ty » sach tu, sach thu, xach tay
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

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