Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
duc manh » suc manh, duc anh, duc minh
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach ty
mang xa » lang xa, mang may, dang xay
nang ma » tang ma, sang ma, nang cao
hieu vo » hieu voi, hieu va, hieu ve
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((mang xa) or (nang ma)) hoi. hieu vo co ((xuc van) or (duc manh)) hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((mang xa) OR (nang ma)) hoi. hieu vo co ((xuc van) OR (duc manh)) hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((mang xa) or (nang ma)) hoi. hieu vo co ((xuc van) or (duc manh)) hanh vi cua viet*.