The phrase "a complex situation for" is correct and usable in written English.
It can be used to describe a scenario that involves multiple factors or challenges affecting a particular person or group.
Example: "The recent economic changes have created a complex situation for small business owners trying to adapt."
Alternatives: "a challenging scenario for" or "a difficult circumstance for".
If I'm assessing a complex situation for which there are no easy answers (that I can see) I would aim to stay objective and balance different viewpoints and opinions.
The mutual inter-dependence of these groups and their increasingly common goals in the Af-Pak region has created a complex situation for Pakistan, turning it into a regular target of militant attacks.
Overall, this leaves a complex situation for the chef.
Ovarian endometriomas, which are a common feature of endometriosis, create a complex situation for infertile patients.
The follow-up studies we have previously reported on revealed a complex situation for screening-detected adolescents.
Despite the introduction of erythropoiesis-stimulating agents (ESA), anaemia management in chronic kidney disease (CKD) remains a complex situation for nephrologists.
Comparing the practice of medicine with aviation mechanics and construction of skyscrapers, this book made me think about failure in a completely different way – even in a complex situation, the reasons for failure can be extraordinarily simple.
At low Lewis number, substitution of spray for gas leads to a more complex situation for which two branches can coexist: the first one still corresponding to the pulsating regime, the other one being related to the diffusive thermal cellular instability.
GenAlyzer analysis unveiled a more complex situation for the two Btau unassigned scaffolds 004.35 and 004.39.
But where it was invoked in the sincere belief that antilogic elements were indeed involved, or where it was used for analyzing a complex situation in order to reveal its complexity, then antilogic was in no way inconsistent with devotion to truth.
— At War Everyone nods to the principle that journalists are not and should not be the story, but that is a simple mantra for a complex situation.
