I have the following function calls at several places in my class.
[myClass doOperationOne];
[myClass doOperationTwo];
[myClass doOperationThree];
In the current version of Xcode, I believe you can only search using regular expressions. Replace doesn't give you that flexibility. If you only have three methods you want to replace in this manner, I would run search and replace three times. Otherwise, I would modify my source code in BASH using awk or sed.