How do I make Google search with multiple sets of filter conditions?

Question

I'm trying to combine two search queries consisted of multiple search operators into one search query, but it's not working.

1st query:

trade war site:bbc.com AND inurl:world-43512098

2nd query:

trade war site:cnn.com AND inurl:2019/07/19/economy

Combined query:

trade war (site:bbc.com AND inurl:world-43512098) OR (site:cnn.com AND inurl:2019/07/19/economy)

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Answer 1

1st query:

trade war site:bbc.com AND inurl:world-43512098

2nd query:

trade war site:cnn.com AND inurl:2019/07/19/economy

Combined query:

trade war (site:bbc.com AND inurl:world-43512098) OR (site:cnn.com AND inurl:2019/07/19/economy)

Google Advanced Search Help - no parentheses

Combined query

trade war site:bbc.com OR site:cnn.com AND inurl:world-43512098 OR inurl:2019/07/19/economy

Explanation: (search terms) AND (Site #1) OR (Site #2) + (URL #1) OR (URL #2)

Proof it works:

Trying:

• trade war site:bbc.com AND inurl:world-43512098 OR site:cnn.com AND inurl:2019/07/19/economy

• trade war site:bbc.com inurl:world-43512098 OR site:cnn.com inurl:2019/07/19/economy

• trade war (site:bbc.com AND inurl:world-43512098) OR (site:cnn.com AND inurl:2019/07/19/economy) - which you used

doesn't work.