Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
vu khanh » vu thanh, van khanh, duy khanh
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
lam cua » nam cua, lam chat
cac xuc » cam xuc, cac nuoc, chat xuc
vu sach » vu bach, su sach, vu khach
hieu ve » hieu van
xuc va » duc va, tuc va, luc va
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu khanh)) ky nang o hoi. ((hieu ve) OR (hieu va)) cac xuc va thanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khanh)) ky nang o hoi. ((hieu ve) OR (hieu va)) cac xuc va thanh lam cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu khanh)) ky nang o hoi. ((hieu ve) OR (hieu va)) cac xuc va thanh lam cua triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu khanh)) ky nang o hoi. ((hieu ve) OR (hieu va)) cac xuc va thanh lam cua triet*.