[edit] Overleaf guides

[edit] LaTeX Basics

[edit] Mathematics

[edit] Figures and tables

[edit] References and Citations

[edit] Languages

[edit] Document structure

[edit] Formatting

[edit] Fonts

[edit] Presentations

[edit] Commands

[edit] Field specific

[edit] Class files

Yes! To perform a "Replace" operation using regular expressions (available under the Find > replace menu item), you can specify the fields as the following:

Replace: /([a-z])-([a-z])/ 
With: /$1$2/

where $1, $2 etc are the back-references to the first, second captured groups.