The phrase "which we conducted" is correct and usable in written English.
It can be used when referring to an event, task, or action that has already been done. For example, "We conducted extensive research into the topic, which we conducted over the course of six months."
The methods by which we conducted our liaison grew in diversity and ingenuity with each all too brief encounter.
For instance, in our research, which we conducted over email, we measured specific phrases, common questions, and greetings that frontline workers use with customers.
At Wachovia, Susanne Svizeny, the president of the region in which we conducted our study, was the primary cheerleader for the program.
We sent the payer survey to 21 leading Medicare part D plans and pharmacy benefit managers, for which we conducted a coverage review.
Ultimately for an initial clinical trial, which we conducted from 2012 to 2016 in 28 kids with DIPG, we decided to use an agent called I24I-8H9.
They contacted local interviewers, trained them, and identified all women entrepreneurs in the 17 communities, in which we conducted the experiment.
These data are compared with the results of our own survey which we conducted with the help of a specially designed questionnaire.
Connectivity has transformed the ways in which we conduct business and personal relationships.
But that's the condition in which we conduct politics, and the way in which a tone can be irretrievably set.
Public relations is the chief medium through which we conduct our political affairs, so we would do well to take the crisis seriously.
Language, as the medium through which we conduct almost all relationships, public and private, bears the precise imprint of our cultural attitudes.
