Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
va hanh » van hanh, va thanh, ban hanh
cao suc » cao su, cao duc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
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: su sach ky nang xa hoi. hieu va cao suc ((va hanh) or (va danh)) ca ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu va cao suc ((va hanh) OR (va danh)) ca ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu va cao suc ((va hanh) or (va danh)) ca ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va cao suc ((va hanh) or (va danh)) ca ((su triet) OR (ve triet))*.