Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
tinh thai » sinh thai, tinh toan, tinh chat
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
tu sac » tu sach, tu cac, tu san
nang o » nang co, nang ho, nang ro
tu can » tu ban, tu cac, thu canh
ve cao » va cao, ve bao, ve cac
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) or (tu can)) ky nang o lai. hieu ve cao duc tan ((hanh thai) or (tinh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu can)) ky nang o lai. hieu ve cao duc tan ((hanh thai) OR (tinh thai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu can)) ky nang o lai. hieu ve cao duc tan ((hanh thai) or (tinh thai)) cua tre*.