Perhaps you should try some spelling variations:
ve triet » va trien, su triet
quoc ban » quoc bao, quoc lan, quoc quan
nang hai » hang hai, nang tai, dang hai
va triet » va thiet, va trien, cua triet
thanh ha » thanh hoa, thanh hai, nhanh ha
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc ban » duc ban, cuc ban, xuat ban
hieu va » lieu va, hieu qua
hai hoi » dai hoi, hai moi, hai hai
va cao » va cac, va co, va dao

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 ky nang hai hoi. hieu va cao ((xuc ban) or (quoc ban)) thanh ha ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang hai hoi. hieu va cao ((xuc ban) OR (quoc ban)) thanh ha ((va triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang hai hoi. hieu va cao ((xuc ban) or (quoc ban)) thanh ha ((va triet) OR (ve triet))*".