Perhaps you should try some spelling variations:
hanh dao » lanh dao, thanh dat, thanh dam
huu viet » huy viet, hung viet, khau viet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
dao huu » do huu
co tuc » co thuc, co tu, co toc
tuc va » thuc va, truc va, tuc xa
va co » vo co

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 dang ((xay hoi) OR (xa hoi)). hieu va co tuc va hanh dao huu viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((xay hoi) OR (xa hoi)). hieu va co tuc va hanh dao huu viet".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((xay hoi) OR (xa hoi)). hieu va co tuc va hanh dao huu viet*.