Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh nha » thanh nhan, thanh ha, thanh nga
vu sach » vu bach, su sach, vu khach
ly nang » ky nang, ly hang, ly vang
va chat » van chat, cao chat, hoa chat
luc van » luoc van, luu van, duc van
nha cua » nhat cua, nhan cua, nghia cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang

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 ((y nang) OR (ly nang)) xa hoi. lieu ((va chat) or (va phat)) luc van thanh nha cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (ly nang)) xa hoi. lieu ((va chat) OR (va phat)) luc van thanh nha cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) OR (ly nang)) xa hoi. lieu ((va chat) or (va phat)) luc van thanh nha cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) OR (ly nang)) xa hoi. lieu ((va chat) or (va phat)) luc van thanh nha cua tre*.