"make some efforts" is a correct and usable phrase in written English.
It can be used when talking about someone putting in effort or trying hard to achieve something. Example: She made some efforts to improve her grades by studying every night.
This forced Mr Perry to make some efforts to convince Republican primary voters that he is really conservative.
The EU, however, was adamant that America should make some efforts to curb its own emission levels.
Vera's diet of bacon stotties and cake does little to dispel this large image, but she does make some efforts towards a healthier regime.
"The answer is ambiguous," Saper said in a telephone interview, though Brown, then living in the South of France, did make some efforts to build his machine.
But it will make some efforts to encourage investment in rooftop solar by making changes to the feed-in-tariff for smaller projects.
While the Russians typically make some efforts to reduce their fingerprints on actions -- making it hard to say with 100% certainty that they are responsible for many of them -- the cumulative weight of the evidence of the last few years suggests that the Russians are aggressively playing a high-stakes, covert game, and they consider few if any holds barred.
At least they make some effort I suppose.
* Take your time but do make some effort to lose the weight.
At the same time, the author does make some effort to explain the Republican point of view.
"If you want to have a more interesting life, you will make some effort," is how he put it.
Maybe we ought to make some effort to find a cure, or at least understand more about what causes it.
