Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh hai » thanh hai, nhanh hai, hang hai
cham duc » pham duc, pham duy, phan duc
ban hanh » ban hang
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren
su sac » su sach, su cac, su xac
sac ky » cac ky, sai 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 sac ky tang xa hoi. hieu va ((cham duc) OR (cham soc)) ban hanh hai ((cuu tre) OR (cau treo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang xa hoi. hieu va ((cham duc) or (cham soc)) ban hanh hai ((cuu tre) OR (cau treo))~".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang xa hoi. hieu va ((cham duc) or (cham soc)) ban hanh hai ((cuu tre) OR (cau treo))*.