Perhaps you should try some spelling variations:
van tham » van thanh, van tuan, van chat
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
soc va » hoc va, loc va, doc va

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 xa hoi. hieu ((va cham) or (van tham)) soc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((va cham) OR (van tham)) soc va danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((va cham) or (van tham)) soc va danh vai cua tre*.