Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
su cach » su sach, tu cach, su cac
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
doi cua » dai cua, hoi cua
di cua » dai cua, de cua, do cua

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 anh ((di cua) OR (doi cua)) 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 anh ((di cua) OR (doi cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: su cach tu nang xa hoi. ((hieu qua) or (hieu quan)) cam xuc van anh ((di cua) OR (doi cua)) triet*.