Perhaps you should try some spelling variations:
co sach » bo sach, cuon sach, hoc sach
hieu ve » hieu va, hieu van
xuc van » duc van, xuc ban, thuc van
luc van » luoc van, luu van, duc van
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
cua te » cua tu
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: co sach y nang x hoi. hieu ve cam ((xuc van) or (luc van)) hanh vi ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y nang x hoi. hieu ve cam ((xuc van) OR (luc van)) hanh vi ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: co sach y nang x hoi. hieu ve cam ((xuc van) or (luc van)) hanh vi ((cua te) or (cuu tre))*.