Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh ha » thanh hoa, thanh hai, nhanh ha
hieu va » lieu va
cua tre » cua te, cuu tre, cua triet
cham o » cham soc
ha cua » hoa cua, hai cua, nha cua
x hoi » xa hoi, o hoi, 5 hoi
o va » do va, so va, co va

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) OR (hieu qua)) cham o va thanh ha 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 va) OR (hieu qua)) cham o va thanh ha 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 va) OR (hieu qua)) cham o va thanh ha cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((x hoi) or (x ho)). ((hieu va) OR (hieu qua)) cham o va thanh ha cua tre*.