Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
thai cua » than cua, tai cuc, tri cua
va thanh » gia thanh, ban thanh, va tinh
nang dai » nang dau, nang tai, lang dai
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu van
cac luc » cau luc, coc luc, cac nuoc
luc va » duc va, tuc va, loc va
su sai » su tai, su dai, su mai
su hai » su tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sai) or (su hai)) ky nang dai hoi. ((hieu ve) or (hieu va)) cac luc va thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su hai)) ky nang dai hoi. ((hieu ve) OR (hieu va)) cac luc va thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su hai)) ky nang dai hoi. ((hieu ve) or (hieu va)) cac luc va thanh thai cua tre*.