Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
van hanh » van thanh, ban hanh, van anh
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, dua tren
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
tu sac » tu sach, tu cac, tu bac
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
ve cac » va cac, vien 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 san)) ky nang o lai. hieu ve cac xuc van hanh thai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang o lai. hieu ve cac xuc van hanh thai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky nang o lai. hieu ve cac xuc van hanh thai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky nang o lai. hieu ve cac xuc van hanh thai ((cua tre) OR (cua triet))*.