Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hieu van » hieu va, thien van, lieu va
cau thuc » cau truc, cuu thuc, can thuc
nang xa » nang x, lang xa, nang ma
sach ty » sach tu, sach thu, xach tay
van cau » van dau, van hau, van chat
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
sai ky » sac ky
va va » va van, va vua, va vai

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 ty) or (sach y))) or (sai ky)) nang xa hoi. hieu van cau thuc va hanh va va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ty) OR (sach y))) OR (sai ky)) nang xa hoi. hieu van cau thuc va hanh va va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ty) or (sach y))) or (sai ky)) nang xa hoi. hieu van cau thuc va hanh va va triet*.