Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach v nang x hoi. ((hieu va) OR (hieu qua)) cam xuc va hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach v nang x hoi. ((hieu va) OR (hieu qua)) cam xuc va hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach v nang x hoi. ((hieu va) OR (hieu qua)) cam xuc va hanh vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: vu sach v nang x hoi. ((hieu va) OR (hieu qua)) cam xuc va hanh vi ((cua tre) or (cuu tre))*.