Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
han tai » hang tai, nhan tai, van tai
nang ho » nang hoc, nang co, tang ho
van han » van hanh, van phan, van nhan
hieu ve » hieu van
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
sai ky » sac ky
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sai ky) or (cac ky)) nang ho hoi. ((hieu ve) OR (hieu va)) cam tuc van han tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sai ky) OR (cac ky)) nang ho hoi. ((hieu ve) OR (hieu va)) cam tuc van han tai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sai ky) or (cac ky)) nang ho hoi. ((hieu ve) OR (hieu va)) cam tuc van han tai cua triet*".