Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh va » thanh van, hanh va, thanh ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
cham o » cham soc
x hoi » xa hoi, o hoi, 5 hoi
o ban » co ban, lo ban, do ban

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