Perhaps you should try some spelling variations:
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, mai hoi
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
co cua » con cua, cong cua, cuoi cua

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

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