Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
va tuyen » va truyen, tac tuyen, ke tuyen
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac toc » cac toi, cac nuoc, cac thoi
ket va » ket van

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu qua cac toc ((((va thanh) or (ban thanh))) or (may tinh)) ket va tuyen~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu qua cac toc ((((va thanh) OR (ban thanh))) OR (may tinh)) ket va tuyen.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu qua cac toc ((((va thanh) or (ban thanh))) or (may tinh)) ket va tuyen*.