Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thi hanh » thi thanh
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, va tinh, le thanh
sach ky » sac ky, sach y, sach ty
thi van » thi lan, thi nang
ca viet » va viet, co viet, hoa viet
lap ca » lap cua, lap va, lap da
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 ky nang x hoi. ((thi van) or (thi hanh)) bac xuc ((va thanh) or (ban thanh)) lap ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang x hoi. ((thi van) OR (thi hanh)) bac xuc ((va thanh) OR (ban thanh)) lap ca viet.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. ((thi van) or (thi hanh)) bac xuc ((va thanh) or (ban thanh)) lap ca viet*.