"strive more" is correct and usable in written English.
You can use it when you want to encourage someone to work harder or to achieve more. Example: "If you want to succeed, you will have to strive more."
"Maybe it will make people strive more.
Or, conversely, perhaps people who are, by nature, malcontents tend to strive more.
Legal scholarship should strive more towards verifiable or falsifiable statements about the law.
Nothing is impossible in this world, all you need is a good strategy to strive more for better success.
So as academics, we should strive more to add value by being objective and rigorous about the conditions under which established views do and don't work well.
It's about leaving behind the stale Big Government versus Small Government framework and figuring out how to use limited but energetic government to help people work harder and strive more.
As he says himself: "I've been striving more and more without that intense desire to be liked".
No Democrat since segregation days has leant further to the right; none has striven more calculatingly to be all things to all men than President Clinton.
He began composing, and the music that arose was tinged with mystery; lyrical and searching, it strove more for atmosphere than to provide displays of virtuosity.
All the more credit, therefore, to the Dardennes, who have striven more than many filmmakers to bring good deeds to life.
Service can be scattered and charming at the same time, if only because a restaurant like this strives more to be pleasant than serious.
