Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, ban hanh
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, dia danh
tu san » thu san, tu ban, tu can
co cua » con cua, cong cua, cuoi cua
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang ma hoi. hieu qua cac xuc ((va danh) or (va hanh)) ((ca cua) OR (co cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang ma hoi. hieu qua cac xuc ((va danh) OR (va hanh)) ((ca cua) OR (co cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang ma hoi. hieu qua cac xuc ((va danh) or (va hanh)) ((ca cua) OR (co cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu san ky tang ma hoi. hieu qua cac xuc ((va danh) or (va hanh)) ((ca cua) OR (co cua)) te*.