Perhaps you should try some spelling variations:
dinh sai » dinh tai, danh sai, dinh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang xa » song xa, lang xa, sang ma
hieu va » lieu va
cao duc » dao duc, cao suc, giao duc
va dinh » van dinh, va kinh, va tinh
sai cua » dai cua, hai cua, lai 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: te sach ky sang xa hoi. ((hieu va) or (hieu qua)) cao duc va dinh sai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang xa hoi. ((hieu va) OR (hieu qua)) cao duc va dinh sai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang xa hoi. ((hieu va) or (hieu qua)) cao duc va dinh sai cua te*.