The phrase "a need for certain" is not correct in standard written English.
It may be intended to express a requirement for specific things or conditions, but it lacks clarity and completeness.
Example: "There is a need for certain resources to complete the project effectively."
Alternatives: "a need for specifics" or "a requirement for certain items".
Likewise there is still a need for certain kinds of game to maintain a large support staff (League of Legends again), but community is allowing some other games in the same space to do a lot with a little (such as DayZ).
The results clearly indicate a need for certain laboratories to improve their tests, e.g. to avoid cross-reactivity with sera containing antibodies specific for heterologous flaviviruses.
Mutant collections can be generated via various means including UV, chemical mutagenesis, or by insertion of a DNA fragment conferring resistance to antibiotics or overcoming a need for certain vitamins or amino acids.
As well, there is a need for certain content in Course Books to be brought up-to-date with current thinking in the particular field and be made culturally relevant.
The composition of indicators of the DHCPR has been changed at times due to new scientific insights, changing policy priorities, or public attention for certain topics, giving rise to a need for monitoring certain health care system performance aspects.
Do they have a need for a certain level of representation because they are a minority?
"We have a need for a certain kind of professor and his school wants to keep him.
She had "both a distaste for sycophancy and a need for a certain degree of obeisance," and she sends very mixed signals, even now.
But there is a need for a certain level of spectacle to maintain and justify the monarchy's popularity: what the shy and stuttering George VI called "the high hat business".
"And we thought there was a need for a certain type of sushi restaurant for a sophisticated sushi-eating population here".
This led to a need for delegating certain steps of AMTSL to other health care staff, i.e. task shifting.
