Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
cam luc » cam xuc, cau luc
hanh va » hang va, hanh vi
va nang » van nang, da nang, cam nang
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu van
va cua » va chua, via cua, ca cua
luc va » duc va, tuc va, loc va
v nang » vu nang, van nang, voi nang

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 ((v nang) OR (va nang)) xa hoi. ((hieu va) or (hieu ve)) cam luc va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ((v nang) OR (va nang)) xa hoi. ((hieu va) OR (hieu ve)) cam luc va hanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ((v nang) OR (va nang)) xa hoi. ((hieu va) or (hieu ve)) cam luc va hanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ((v nang) OR (va nang)) xa hoi. ((hieu va) or (hieu ve)) cam luc va hanh va cua tre*.