Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
van thanh » ban thanh, van tuan
nap dang » nao dang, nhan dang, cao dang
nam dang » nam dan, nam danh, nam lang
nam dong » lam dong, nam trong, nam phong
so sach » so sanh, bo sach, co sach
cao duc » dao duc, cao suc, giao duc
duc van » duc va, duc tan, duc manh
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
cuc te » cua te, cuc thue, cuc tieu

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 ((nap dang) or (((nam dang) or (nam dong)))) xay hoi. hieu va cao duc van thanh tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((nap dang) OR (((nam dang) OR (nam dong)))) xay hoi. hieu va cao duc van thanh tai cuc te.
• Adding a wildcard symbol may retrieve word variants: so sach ((nap dang) or (((nam dang) or (nam dong)))) xay hoi. hieu va cao duc van thanh tai cuc te*.