How to specify multiple values on siteSearch in google custom search api?

Question

I'm using the google custom search api and want to create a search using the siteSearch:

https://www.googleapis.com/customsearch/v1?key=k&cx=cx&q=cocos2d&siteSearch=www.cocos2d-iphone.org&siteSearchFilter=i

and it works fine (returns all the result only from the given site).

Then I want to specify TWO sites to search so I tried to change the :
siteSearch=www.cocos2d-iphone.org

to 
siteSearch=www.cocos2d-iphone.org www.XXXXXXXX.org
siteSearch=www.cocos2d-iphone.org|www.XXXXXXXX.org
siteSearch=www.cocos2d-iphone.org||www.XXXXXXXX.org

but none of these works.

hope someone can help here, thanks:)

Answer 1

Currently I don't believe you can specify more site through the query param siteSearch.

nevertheless you can configure your Custom Search Engine here: https://www.google.com/cse/manage/all in the "Site to search" area.

This also works for excluding, as you can read here: https://support.google.com/customsearch/bin/answer.py?hl=en&answer=2631038&topic=2601037&ctx=topic

Answer 2

You cannot do this with the as_sitesearch parameter as that only accepts a single value. But you can achieve what you want with the as_q parameter, setting it to some value like: "site:google.com OR site:microsoft.com" - that will work in a similar way to this search.

The as_q parameter is documented here as:

The as_q parameter provides search terms to check for in a document. This parameter is also commonly used to allow users to specify additional terms to search for within a set of search results. Examples q=president&as_q=John+Adams