How can I embed a search into a ProQuest URL?

The basic syntax to build a search URL for the ProQuest platform is:
https://search.proquest.com/runSearch?query=[myQuery]

Where  [myQuery] can be replaced with the search of your choice. Here are some examples of valid queries:
 
1. Simple keyword search:
https://search.proquest.com/runSearch?query=gene
https://search.proquest.com/runSearch?query=sanat
 
2. Document title search:
https://search.proquest.com/runSearch?query=TI(gene)                

3. Author search:
https://search.proquest.com/runSearch?query=AU(smith)                          

4. Subject search:
https://search.proquest.com/runSearch?query=su(climate change)