Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tinh ket » dinh ket, tinh yeu, tinh yen
va tuyen » va truyen, tac tuyen, ke tuyen
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
va cao » va cac, va co, va bao
tuc va » thuc va, truc va, duc va
ket va » ket van
va dao » ca dao

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 lang xa hoi. hieu ((va cao) OR (va dao)) ((tuc va) or (tuc xa)) tinh ket va tuyen~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky lang xa hoi. hieu ((va cao) OR (va dao)) ((tuc va) OR (tuc xa)) tinh ket va tuyen.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky lang xa hoi. hieu ((va cao) OR (va dao)) ((tuc va) or (tuc xa)) tinh ket va tuyen".
• Adding a wildcard symbol may retrieve word variants: toc sach ky lang xa hoi. hieu ((va cao) OR (va dao)) ((tuc va) or (tuc xa)) tinh ket va tuyen*.