When it comes to finding synonyms for the term "complex problems", a few options come to mind. One alternative could be "challenging issues", which reflects the difficulty and complexity of the problem at hand. Another option could be "difficult dilemmas", which emphasizes the challenging and perplexing nature of the problem. "Complicated predicaments" is another term that captures the challenging and multifaceted nature of the situation. "Troublesome quandaries" is another option that reflects the difficulty and urgency of finding a solution. Ultimately, finding a synonym for "complex problems" depends on the context and nature of the specific issue.