Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
thi nang » thi cong, ki nang, thi hanh
cua viet » ca viet, hoa viet, cua vat
thi van » thi lan, thi hanh
sach ky » sac ky, sach y, sach ty
lap cua » lai cua, tap cua, lam cua
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang o hoi. ((thi van) OR (thi nang)) bac ((xuc va) OR (tuc va)) thanh lap cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang o hoi. ((thi van) or (thi nang)) bac ((xuc va) OR (tuc va)) thanh lap cua viet~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang o hoi. ((thi van) or (thi nang)) bac ((xuc va) OR (tuc va)) thanh lap cua viet*.