"exert great effort" is a correct and usable phrase in written English.
You can use it when referring to making an extra effort to do something. For example, "She was determined to succeed, so she exerted great effort into her studies."
"You do not need to exert great effort or spend a lot of money to make 10g of explosives, more or less.
Maybe this was Dell's plan all along: let other companies exert great effort in chipping away a foothold in the iPad mountain.
I needed to exert great effort simply to project my voice, and for decades I had to catch my breath after speaking just five or six words.
During an August appearance on "Jimmy Kimmel Live," she pretended to exert great effort as she opened a jar of pickles and asked the host to check her pulse.
Similarly, effort expectancy may not have a significant relationship with behavioural intention because people tend not to exert great effort during a pilot project.
But the notion that extra money doesn't matter would be hard to sell to suburban parents who exert great efforts raising money to supplement what taxes provide to schools.
Individuals with CFS appear to have to exert greater effort to process auditory information as effectively as demographically similar healthy adults.
Third, FOB boards should exert greater effort to make not only their boards but also their companies more diverse especially in light of their concerns about innovation and performance on talent management.
Mills (2014) explained the importance of SE: Students with high self-efficacy to perform academic tasks tend to exhibit lower levels of anxiety, display increased persistence when faced with obstacles, exert greater effort, show more flexible learning strategy use, and display higher levels of intrinsic interest in academic tasks.
If an agent were disposed to exert greater effort if necessary, we would, I think, attach less significance to the low level of effort that was actually expended.
