Perhaps you should try some spelling variations:
dong xay » dang xay, cong xay, mong xay
van dinh » van minh, van dich, va dinh
dinh lam » dinh van, tinh lao
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
xuc van » duc van, luc van, vuc van
va cao » va co, va dao, va bao
lam su » lai su, lam so, lam vu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tu dong xay hoi. hieu ((va cao) or (va cac)) xuc van dinh lam su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu dong xay hoi. hieu ((va cao) OR (va cac)) xuc van dinh lam su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tu dong xay hoi. hieu ((va cao) or (va cac)) xuc van dinh lam su triet*.