Perhaps you should try some spelling variations:
kho tang » cao tang
cham duc » pham duc, cham soc, pham duy
cac kho » cac khoi, cac khoa, cac khu
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
hieu ve » hieu van
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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: tu cac kho tang ma hoi. ((hieu ve) OR (hieu va)) cham duc ban ((hanh di) OR (hang di)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac kho tang ma hoi. ((hieu ve) or (hieu va)) cham duc ban ((hanh di) OR (hang di)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cac kho tang ma hoi. ((hieu ve) or (hieu va)) cham duc ban ((hanh di) OR (hang di)) cua tre*.