Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
cham so » cham soc, cham o, cham hoi
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
ham so » nam so, cham soc
x hoi » xa hoi, o hoi, 5 hoi

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

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