Perhaps you should try some spelling variations:
thien van » thi van
ban benh » san benh, ba benh, ban banh
cac khoi » cac thoi, cac khoan, cach thoi
hieu va » lieu va, hieu qua
benh vi » benh va, benh ve, benh li
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((mai hoi) or (cac khoi)). ((thien van) or (hieu va)) cam xuc ban benh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((mai hoi) OR (cac khoi)). ((thien van) OR (hieu va)) cam xuc ban benh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((mai hoi) or (cac khoi)). ((thien van) or (hieu va)) cam xuc ban benh vi cua tre*.