Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
lam duc » lam duoc, pham duc, nam duoc
va tinh » may tinh
ma hoi » mai hoi, xa hoi, me hoi
va lam » van lam, va lap
co cua » con cua, ca cua, cong cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ((ma hoi) or (ma hoa)). lieu va lam duc ((va thanh) OR (va tinh)) co cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((ma hoi) OR (ma hoa)). lieu va lam duc ((va thanh) OR (va tinh)) co cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ((ma hoi) or (ma hoa)). lieu va lam duc ((va thanh) OR (va tinh)) co cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) or (ma hoa)). lieu va lam duc ((va thanh) OR (va tinh)) co cua te*.