sidetrack

US /ˈsaɪd.træk/
UK /ˈsaɪd.træk/
1.

đi chệch hướng

to direct a person's attention away from an activity or subject toward another one that is less important:

:
Ruth was looking for an envelope in a drawer when she was sidetracked by some old letters.
1.

đi chệch hướng

the act of sidetracking someone, or an example of this:

:
I'm dealing with the points in order, but I keep going off on a sidetrack.