logging - Perl text filtering -

how can filter text on log file:

/servicios/busquedas?colecciones=29&orden=score&recursos=rango-1-20&query=%28%28%28texto%3a%28periodos+and+contractuales%29%29+or+%28title%3a%28periodos+and+contractuales%29%29+or+%28%28extra%3a%28periodos+and+contractuales%29%29%5e0.5%29+or+%28%28title%3a%28%22periodos+contractuales%22%7e15%29%29%5e5%29+or+%28%28extra%3a%28%22periodos+contractuales%22%7e15%29%29%5e3%29+or+%28%28texto%3a%28%22periodos+contractuales%22%7e15%29%29%5e3%29%29%29 tardo 0.115818977355957 (network 0.111818977355957)

to this:

periodos contractuales 

i've done split methods can't find regular character split. words periodos , contractuales changing time!

when periodos , contractuales part, should work:

if ( $string =~ m{periodos} && $string =~ m{contractuales}/ ) {    print q{periodos contractuales}; }