Perhaps you should try some spelling variations:
kho tang » cao tang
van tuan » van quan, van ban, anh tuan
tuan hoi » tan hoi, quang hoi, tuan hoan
cac kho » cac khoi, cac khoa, cac khu
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
hoi cua » hoi chuc
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac kho tang xa hoi. ((hieu ve) or (hieu va)) pham duc van tuan hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac kho tang xa hoi. ((hieu ve) OR (hieu va)) pham duc van tuan hoi cua tre.
• Adding a wildcard symbol may retrieve word variants: su cac kho tang xa hoi. ((hieu ve) or (hieu va)) pham duc van tuan hoi cua tre*.