leave no stone unturned Synonyms

make an extra effort try as hard as one can make an all-out effort make a great effort do everything possible do all one can do one's level best exert oneself work hard try one's best be determined be persistent try every possible course make all possible efforts make every possible effort make all efforts exert every effort not take no for an answer be pertinacious show determination stay the course spare no effort keep on keep going hold on press on plough on carry on go on persevere plug away cast about pull out all the stops press ahead stand firm hammer away move heaven and earth knock oneself out go all out give one's all seek out continue