Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
cac thuc » cach thuc, cac thu, can thuc
vat hanh » vat thanh, van hanh, va hanh
nang xa » nang x, lang xa, nang ma
su can » su van, tu can, su han
su cao » cu cao, vu cao, su co
cua tu » cua tuc, cua su, cua cu

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 can) OR (su cao)) ky nang xa hoi. hieu cua cac thuc vat hanh vi ((cua te) OR (cua tu))~.
• Adding a wildcard symbol may retrieve word variants: ((su can) or (su cao)) ky nang xa hoi. hieu cua cac thuc vat hanh vi ((cua te) or (cua tu))*.