One of the most useful formulas for me was being able to find if a cell contained a value from a list of items, this excellent Excel formula https://exceljet.net/formula/cell-contains-one-of-many-things was exactly what I needed.
The formula: =SUMPRODUCT(–ISNUMBER(SEARCH(things,A1)))>0 also works in Google docs, provided that you created a named range.
Here is the spreadsheet for you to look at:
Feel free to poke around the spreadsheet too!
Important note: I also included an example of where my named range contained a blank cell, don’t do this – if you do this, the entire formula falls apart and you’ll get bad values.
To create a named range in Google docs, simply highlight your cells and click on the Data menu bar and select Named Ranges:
Then name it appropriately: