"To renew the effort" means to make a fresh and stronger attempt at achieving something, often after previous attempts have been unsuccessful. Full definition
Although this could involve reading marriage advice books or having counseling, many times it really is just a case of renewed effort. (marriageadviceblog.com)
And of course, the inevitable need for renewed efforts on our organization. (theinspiredroom.net)
These are not the only reasons firms are making renewed efforts to solve the gender equality problem. (canadianlawyermag.com)