bargain for something

Từ điển Oxford Advanced Learner 8th

ˈbargain for/on sth derived
(usually in negative sentences)to expect sth to happen and be prepared for it
•We hadn't bargained for this sudden change in the weather.
•When he agreed to answer a few questions, he got more than he bargained for (= he got more questions, or more difficult ones, than he had expected).
•~ doing sth I didn't bargain on finding them here as well.
•~ sb doing sth I hadn't bargained on them being here.
Main entry: ↑bargain_derived