Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chat soc » cham soc, chat hoc, chat doc
va chat » van chat, va phat, cao chat
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) OR (v nang)) xa hoi. lieu va chat soc ((va danh) or (va dinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (v nang)) xa hoi. lieu va chat soc ((va danh) OR (va dinh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (v nang)) xa hoi. lieu va chat soc ((va danh) or (va dinh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) OR (v nang)) xa hoi. lieu va chat soc ((va danh) or (va dinh)) vi cua tre*.