Ok, this is a great challange! Honor to the one who solves this one

I'm making a budget.
I want to sort my spendings into categories. My spendings are downloaded as a spreadsheet from my bank. It looks like this:

Details Sum Category
VISA Mc Donalds -130,00
138766 Statoil -640,00
76234 TAXI 20141127 -357,00
23454 BurgerKing -130,00

The categories in this example would be:

lunch
gas

Now, I want to search for multiple strings in the A-column and return the correct category for each spending. F.x: I will search for texts like "donalds","burger","oil". If no match is found, the return value should be an empty string. The result should look like:

Details Sum Category
VISA Mc Donalds -130,00 lunch
138766 Statoil -640,00 gas
76234 TAXI 20141127 -357,00
23454 BurgerKing -130,00 lunch

I have tried
Formula: copy to clipboard 
=IFERROR(IF(SEARCH("*donalds*";A1);"lunch";"");"")
, but I have only been successful with searching for one string. Using macro is an option, but I want to try solving this one without use of macro.

I'll be greatful for all the help you can provide!