Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va nam » ha nam, va nay
tuc va » thuc va, truc va, tuc xa
de van » le van, do van, ve van
de va » te va, ke va, le va

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 nang xa hoi. lieu ((va nam) or (van nam)) tuc va thanh ((de va) OR (de van)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. lieu ((va nam) OR (van nam)) tuc va thanh ((de va) OR (de van)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. lieu ((va nam) or (van nam)) tuc va thanh ((de va) OR (de van)) triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. lieu ((va nam) or (van nam)) tuc va thanh ((de va) OR (de van)) triet*.