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

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 hai. hieu ve cac ((xuc van) or (duc van)) ((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 hai. hieu ve cac ((xuc van) OR (duc van)) ((hanh thai) OR (hinh thai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hai. hieu ve cac ((xuc van) or (duc van)) ((hanh thai) or (hinh thai)) cua tre*.