Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach tu, sach thu, xach tay
hieu vi » hieu voi, hieu va, hieu ve
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai 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: doc ((sach ty) OR (sach y)) nang x hoi. hieu vi pham thuc va hanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((sach ty) OR (sach y)) nang x hoi. hieu vi pham thuc va hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: doc ((sach ty) OR (sach y)) nang x hoi. hieu vi pham thuc va hanh vai cua triet*.