"scattered efforts" is correct and usable in written English.
You can use it to describe a situation in which people take multiple, independent actions that do not build off of each other. Example: "The company's scattered efforts to increase efficiency were ultimately unsuccessful."
There have been scattered efforts at reform, including in Texas.
State legislators, mimicking scattered efforts elsewhere, responded with a cagier, indirect approach.
Over the last two decades there have been scattered efforts to create applications that are more inclusive and integrated in handling multiple types of unstructured information.
Increases in the international price of gold in the late 1970s stimulated scattered efforts to mine it commercially, but most of the region's new settlers came in search of land rather than gold.
Since the ouster of President Hosni Mubarak of Egypt, security forces have made scattered efforts to prevent foreign journalists from covering the spread of demonstrations, which have taken on a younger and more spontaneous cast in recent days.
Under pressure from environmental groups, there have been scattered efforts to renounce shark fin soup – a concoction associated in traditional Chinese culture with health and prosperity although its flavor results mostly from other ingredients like vegetables, meat and seasonings.
So far they have withstood scattered Congressional efforts to regulate them more closely, although the White House has proposed some administrative changes that could slow the companies' growth.
But these and other scattered rescue efforts can't stem the widespread looting of ancient sites.
However, ex situ conservation is rather fragmented, largely because it is mainly based on national programs and scattered institutional efforts.
Instead of scattering its efforts among these causes, the institute's researchers are sifting through orphan compounds that might attack dehydration directly, by stopping the secretion of water into the gut.
Rivoli's scattered escorts were not pursued, British efforts being directed instead at bringing the shattered Rivoli back to port as a prize.
