Perhaps you should try some spelling variations:
cham hoc » cham soc, chat hoc, cham hoi
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
hoc van » hoc dan, hoc va, hoc vat
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
anh vi » hanh vi, anh va, anh ve
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y nang) or (v nang)) xa hoi. lieu va cham hoc van anh vi ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) xa hoi. lieu va cham hoc van anh vi ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) xa hoi. lieu va cham hoc van anh vi ((cuu tre) or (cua te))*.