Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
hieu ve » hieu van
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa
va cua » va chua, via cua, ma cua
ca cua » co cua
sinh y » sinh ly

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh y nang ma hoi. ((hieu va) or (hieu ve)) cam xuc va hanh ((va cua) or (ca cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh y nang ma hoi. ((hieu va) OR (hieu ve)) cam xuc va hanh ((va cua) OR (ca cua)) triet.
• Adding a wildcard symbol may retrieve word variants: hoc sinh y nang ma hoi. ((hieu va) or (hieu ve)) cam xuc va hanh ((va cua) or (ca cua)) triet*.