Perhaps you should try some spelling variations:
thuat dan » thuat san, thuat ban, thuat dam
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
dao xuc » dao duc, dao tuc, dao xu
va vanh » va danh, va hanh, va anh
than va » thanh va, nhan va, toan va
dan ky » van ky
va dao » ca dao
x hoi » xa hoi, o hoi, 5 hoi

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: thuat dan ky nang ((x hoi) OR (x ho)). hieu va dao xuc ((va vanh) OR (va van)) than va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat dan ky nang ((x hoi) OR (x ho)). hieu va dao xuc ((va vanh) or (va van)) than va triet~".
• Adding a wildcard symbol may retrieve word variants: thuat dan ky nang ((x hoi) OR (x ho)). hieu va dao xuc ((va vanh) or (va van)) than va triet*.