Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » thanh va, thanh ve, nhanh vi
truc van » truc va, thuc van, truc ban
tuc van » thuc van, tuc va, duc van
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
su sac » su sach, su cac, su xac
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: su sac ky nang o hoi. hieu ve cam ((tuc van) or (truc van)) ((thanh vi) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang o hoi. hieu ve cam ((tuc van) OR (truc van)) ((thanh vi) OR (hanh vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang o hoi. hieu ve cam ((tuc van) or (truc van)) ((thanh vi) OR (hanh vi)) cua triet*".