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