Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
dang xa » dang xay, lang xa, dang ha
hieu le » hieu ve, hieu he, hieu ly
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
le nam » ly nam, he nam, le na
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu le nam thuc va hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) dang xa hoi. hieu le nam thuc va hanh vi va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu le nam thuc va hanh vi va triet*.