Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
cua viet » ca viet, hoa viet, cua vat
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
danh di » danh du, xanh di, danh dien
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach tru nang x hoi. hieu va cam ((xuc van) or (duc tan)) ((danh di) or (hanh vi)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tru nang x hoi. hieu va cam ((xuc van) OR (duc tan)) ((danh di) OR (hanh vi)) cua viet.
• Adding a wildcard symbol may retrieve word variants: toc sach tru nang x hoi. hieu va cam ((xuc van) or (duc tan)) ((danh di) or (hanh vi)) cua viet*.