Perhaps you should try some spelling variations:
tuan khai » than khai, quang khai, tuong khai
kho tang » cao tang
khai cua » thai cua, hai cua, khi cua
van tuan » van quan, van ban, anh tuan
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, tang ma, lang xa
ve cham » va cham, ve chat, ve chim
cac kho » cac khoi, cac khoa, cac khu
vu cham » va cham, tu cham, qua cham
vu kham » vu khanh
duc van » duc va, duc tan, duc manh
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 cham) or (((vu cham) OR (vu kham)))) duc van tuan khai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac kho tang xa hoi. hieu ((ve cham) OR (((vu cham) OR (vu kham)))) duc van tuan khai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac kho tang xa hoi. hieu ((ve cham) or (((vu cham) OR (vu kham)))) duc van tuan khai cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac kho tang xa hoi. hieu ((ve cham) or (((vu cham) OR (vu kham)))) duc van tuan khai cua tre*.