Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
vu khach » vu khanh, vu khac, vay khach
nang xa » nang x, lang xa, nang ma
va chat » van chat, cao chat, hoa chat
nha cua » nhat cua, nhan cua, nghia cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v 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 khach y nang xa hoi. lieu ((va chat) or (va phat)) luc ((van thanh) OR (ban thanh)) nha cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang xa hoi. lieu ((va chat) OR (va phat)) luc ((van thanh) OR (ban thanh)) nha cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach y nang xa hoi. lieu ((va chat) or (va phat)) luc ((van thanh) OR (ban thanh)) nha cua tre".
• Adding a wildcard symbol may retrieve word variants: vu khach y nang xa hoi. lieu ((va chat) or (va phat)) luc ((van thanh) OR (ban thanh)) nha cua tre*.