Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
van thanh » ban thanh, van tuan
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
lai cua » dai cua, hai cua, lai chau
luc van » luoc van, luu van, duc van
va than » van than, va phan, va tham
mai hoi » mai khoi, dai hoi, lai hoi
cai ky » cao ky, cac ky, cam ky
ma hoi » xa hoi, ma hoa, me hoi
tu cai » tu cac, tu can, tu bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky nang ((ma hoi) or (mai hoi)). hieu ((va than) OR (va thanh)) luc van thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang ((ma hoi) OR (mai hoi)). hieu ((va than) OR (va thanh)) luc van thanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky nang ((ma hoi) or (mai hoi)). hieu ((va than) OR (va thanh)) luc van thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang ((ma hoi) or (mai hoi)). hieu ((va than) OR (va thanh)) luc van thanh lai cua tre*.