Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
ve cac » va cac, vien cac
kien » bien, vien, tien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky nang) or (ky tang)) xa hoi. hieu ve cac xuc van hanh vi ((cua triet) or (su kien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (ky tang)) xa hoi. hieu ve cac xuc van hanh vi ((cua triet) OR (su kien)).
• Adding a wildcard symbol may retrieve word variants: te sach ((ky nang) or (ky tang)) xa hoi. hieu ve cac xuc van hanh vi ((cua triet) or (su kien))*.