Perhaps you should try some spelling variations:
cua viet » hoa viet, cua vat, cua dieu
ca viet » va viet, co viet, hoa viet
van anh » van thanh, tuan anh, van minh
luc van » luoc van, luu van, duc van
qua cac » cua cac
cac luc » cau luc, coc luc, cac nuoc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
thu san » thuy san, thu ban, phu san
anh vi » hanh vi, anh va, anh ve
tu san » tu ban, tu can, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (thu san)) ky lang xa hoi. hieu qua cac luc van anh vi ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (thu san)) ky lang xa hoi. hieu qua cac luc van anh vi ((cua viet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (thu san)) ky lang xa hoi. hieu qua cac luc van anh vi ((cua viet) or (ca viet))*.