Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh lam » thanh lap, hanh lam, thanh nam
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
lam chat » luan chat, cao chat, ly chat
chat duc » chat xuc, chat doc, chet duoc
van chat » cao chat
duc van » duc va, duc tan, duc manh
co hai » co dai, co hoi, so hai
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san
o hai » so hai, o lai, _ hai
o hoi » co hoi, o hoc, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((o hoi) or (((o hai) or (co hai)))). hieu van chat duc van thanh lam chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((o hoi) OR (((o hai) OR (co hai)))). hieu van chat duc van thanh lam chat triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((o hoi) or (((o hai) or (co hai)))). hieu van chat duc van thanh lam chat triet*.