Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
va triet » va thiet, va trien, ve triet
nang ma » tang ma, sang ma, nang cao
sach ky » sac ky, sach y, sach ty
xuc ban » duc ban, cuc ban, quoc ban
nang xa » nang x, lang xa, mang xa
hieu va » lieu va, hieu qua
va co » vo co
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: thu sach ky ((nang xa) or (nang ma)) hoi. hieu va co ((xuc ban) or (duc manh)) hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang xa) OR (nang ma)) hoi. hieu va co ((xuc ban) OR (duc manh)) hanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((nang xa) or (nang ma)) hoi. hieu va co ((xuc ban) or (duc manh)) hanh vi va triet*.