Perhaps you should try some spelling variations:
hanh nam » thanh nam, hanh lam, hanh ngay
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
v triet » ve triet, va triet, va trien
le nam » ly nam, he nam, le na
va nam » van nam, ha nam, va nay
x hoi » xa hoi, o hoi, x ho
nam v » nam va, nam _, nam a

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

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