Look round for a way to throw a fight (4,5)

I believe the answer is:

cast about

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'look round for a way' is the definition.
I can't tell whether this defines the answer.

'throw a fight' is the wordplay.
'throw' becomes 'cast' (synonyms).
'fight' becomes 'bout' (as in a bout in boxing).
'cast'+'a'+'bout'='CAST ABOUT'

'to' is the link.

Can you help me to learn more?

(Other definitions for cast about that I've seen before include "make a search" , "Search far and wide" .)

I've seen this clue in The Globe and Mail.

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