The phrase "a certain type or" is correct and usable in written English.
It can be used when referring to a specific category or classification of something, often in a general or vague manner.
Example: "In this study, we will focus on a certain type or variety of plant that thrives in arid conditions."
Alternatives: "a specific kind of" or "a particular category of".
All major inflorescence types occur in grasses, and a certain type or variant of that type is often characteristic of a species or group of species.
"For example, they cannot ask to see planning, they do not expect to see a certain type or amount of marking, they cannot go into the staff room apart from the initial meeting and if they observe you for 20 minutes, you can ask for formal feedback".
Companies could choose to block all bots or all except a certain type or any combination they wish.
While a few questions (n = 2) specifically addressed a certain type or phase of emergency (i.e. Are conditional cash transfers feasible in sudden onset disaster (SOD) to improve coverage and utilisation of free services?
A certain type or universal is nothing but the intension of a general name when it is considered in relation to the extension itself, and conversely, the extension of a general name (i.e., a class of individuals) is nothing but the set of tokens of a given type considered in relation to the simple expressions that name them.
They don't have to be a certain type or fit into a specific category.
These SV-detection methods are often limited by algorithm design, by the underlying data, and restricted to analysis of SVs of a certain type, location, or size.
In the next ten years, the survival rate of people with a certain type of melanoma or lung tumor or lymphoma or breast cancer may not change.
Was it a certain type of character or a setting?
"We didn't want to make people use a certain ball or a certain type of goal or have to dig up fields to put down wires".
Facebook should let us decide to batch notifications so we'd only get one of a certain type every 12 or 24 hours, or only when a certain number of similar ones are triggered.
