"complicated emotions" is correct and usable in written English.
You could use it in a sentence such as "I am feeling a complex mix of complicated emotions right now".
The director avoided what he calls "emotional porno" by tenderly training his camera on Olafur, granting the actor the emotional space with which to stoically explore complicated emotions like survivor's guilt, loss and sudden fame.
These are complicated emotions.
The plain language and the complicated emotions are balanced expertly.
When Ishii plays the groom, he experiences complicated emotions.
Complicated emotions crossed Halperin's face: uncertainty, perhaps, and pique.
The Chiefs will face far more complicated emotions in the coming weeks, though.
I think mother had complicated emotions about her things... .. Tells about the archive.
But for certain New Yorkers, these displays have stirred, as the professor said, complicated emotions.
Mr. Hampton, a singer-songwriter originally from Houston, has a knack for using simple language to mask complicated emotions.
Absent from the discourse, however, is any mention of the simple notion of pleasure or of the more complicated emotions.
Ms. Hendra never severed relations with her father, she said, because of the complicated emotions she felt.
