"certain" - key terms from Wikipedia

absolutely certain
advice on certain	artificial colours
after a certain	number
agency revises advice on certain
certain
certain	amount
certain	amount of experience
certain	areas
certain	attitudes in the one
certain	countries
certain	degree
certain	dinosaurs
certain	discrimination on the basis
certain	evidence
certain	firearms
certain	fury
certain	harbors
certain	ideas
certain	information
certain	key
certain	levels
certain	novel electrical phenomena
certain	number
certain	number of unique
certain	point
certain	pressings
certain	racial
certain	ratio
certain	religious
certain	resources
certain	rights
certain	smile
certain	species
certain	terms
convention on certain	conventional weapons
got to be certain
harvest a certain	number
harvest from a certain	number
period certain
qualifications of a certain
requiring certain	requirements
revises advice on certain	artificial
subject to certain	restrictions
sum certain	in money
though certain	shots
un certain	regard
under certain	conditions
value of certain	property
when you harvest a certain
within a certain