Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
duc manh » suc manh, duc minh, duc tan
hanh de » hanh ve, hanh kem
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
de van » le van, do van, ve van
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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: tu sac ky nang ((x hoi) OR (o hoi)). lieu va phat ((duc manh) OR (duc anh)) hanh de van triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) OR (o hoi)). lieu va phat ((duc manh) or (duc anh)) hanh de van triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) OR (o hoi)). lieu va phat ((duc manh) or (duc anh)) hanh de van triet*.