Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hanh tai, anh thai
hinh thai » sinh thai, tinh thai, dinh thi
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
nang o » nang co, nang ho, nang ro
o lai » o lao

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 o lai. hieu ve cac ((xuc van) OR (xuc ban)) ((hanh thai) or (hinh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o lai. hieu ve cac ((xuc van) OR (xuc ban)) ((hanh thai) OR (hinh thai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang o lai. hieu ve cac ((xuc van) OR (xuc ban)) ((hanh thai) or (hinh thai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o lai. hieu ve cac ((xuc van) OR (xuc ban)) ((hanh thai) or (hinh thai)) cua tre*.