Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ve triet » va trien, su triet
va thanh » gia thanh, ban thanh, va tinh
van coc » van hoc, van loc, van cuc
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
van co » van cho, ban co, san co
luc va » duc va, tuc va, loc va
su can » su van, su cao, tu can
doi ve » moi ve, doi va, noi ve
su cac » tu cac, su cao, eu cac

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) or (su can)) ky tang xa hoi. hieu ((van coc) OR (van co)) luc va thanh doi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su can)) ky tang xa hoi. hieu ((van coc) OR (van co)) luc va thanh doi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) or (su can)) ky tang xa hoi. hieu ((van coc) OR (van co)) luc va thanh doi ve triet".
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su can)) ky tang xa hoi. hieu ((van coc) OR (van co)) luc va thanh doi ve triet*.