Perhaps you should try some spelling variations:
cam tuc » cam xuc, cam tu, nam thuc
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
hieu ve » hieu van
va hanh » van hanh, va thanh, va danh
va chu » va che, va cau, va chi
va cuu » va cau, va huu
sinh y » sinh ly
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang
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: hoc sinh y nang ma hoi. ((hieu va) or (hieu ve)) cam tuc va hanh ((va cuu) OR (va chu)) tre~.
• 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 tuc va hanh ((va cuu) OR (va chu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh y nang ma hoi. ((hieu va) or (hieu ve)) cam tuc va hanh ((va cuu) OR (va chu)) tre".
• Adding a wildcard symbol may retrieve word variants: hoc sinh y nang ma hoi. ((hieu va) or (hieu ve)) cam tuc va hanh ((va cuu) OR (va chu)) tre*.