Perhaps you should try some spelling variations:
sang tao » hang tai
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua
ve am » va am

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 ty ((sang tao) or (mang may)) hoi. hieu ve am thuc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((sang tao) OR (mang may)) hoi. hieu ve am thuc va hanh vi cua viet*.