Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
xuc van » duc van, luc van, vuc van
tu nang » tru nang, tu nong, tu nano
su cach » su sach, tu cach, su cac
di su » doi su, da su, de su
ki su » ky su

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: su cach tu nang xa hoi. ((hieu qua) OR (hieu quan)) cam xuc van hanh ((di su) OR (ki su)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cach tu nang xa hoi. ((hieu qua) or (hieu quan)) cam xuc van hanh ((di su) OR (ki su)) triet~".
• Adding a wildcard symbol may retrieve word variants: su cach tu nang xa hoi. ((hieu qua) or (hieu quan)) cam xuc van hanh ((di su) OR (ki su)) triet*.