Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » thien van, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, lang xa, dang ha
va danh » va dinh, va dan, va hanh
ky dang » ky nang, ky danh
tu sach » thu sach, su sach, te sach
ki ve » ke ve, gi ve, vi ve

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 dang xa hoi. ((hieu va) or (hieu van)) chat xuc ((va danh) or (van hanh)) ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. ((hieu va) OR (hieu van)) chat xuc ((va danh) OR (van hanh)) ki ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. ((hieu va) or (hieu van)) chat xuc ((va danh) or (van hanh)) ki ve triet*.