Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ban hanh » ban hang
hanh hai » thanh hai, nhanh hai, hang hai
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
cam duc » cao duc, pham duc, nam duoc
su sai » su tai, su hai, su dai
sai ky » sac ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky tang xa hoi. hieu ve ((cam duc) OR (cam xuc)) ban hanh hai ((cua tre) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky tang xa hoi. hieu ve ((cam duc) OR (cam xuc)) ban hanh hai ((cua tre) or (su triet))~".
• Adding a wildcard symbol may retrieve word variants: su sai ky tang xa hoi. hieu ve ((cam duc) OR (cam xuc)) ban hanh hai ((cua tre) or (su triet))*.