Perhaps you should try some spelling variations:
ban thai » ban than, ban thi, ban tai
thai cua » than cua, tai cuc, tri cua
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
ve chim » va chim, ve cham, ve chinh
vu cham » va cham, vu kham, tu cham
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
su can » su van, su cao, tu can
can ky » van ky, dan ky, ban ky

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

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