These businesses are poised to grow over the long term.It's been three years since the current bull market kicked off, yet investors can still find stocks of competitively strong companies trading at steep discounts. This could suggest severe undervaluation against their long-term growth prospects.If you're looking for stocks with the potential to claw their way back to the top, the following three are promising candidates. 1. Unity SoftwareUnity Software (U 1.21%) is starting to see a return to strong grow ...