Custom filter Gmail emails on receiving, mark as important if phrase is found, archive if not

Custom filter Gmail emails on receiving, mark as important if phrase is
found, archive if not

We subscribe to a request for information press service, were they send us
15 / 20 emails a day (each with 20 or so queries in them) which are all
request from reporters / journalists, asking for an opinion / quote for an
article they are working on.
99% of these queries are irrelevant to us, but we have to sift through
them to make sure.
We use gmail / google apps for business for our emails i was wandering is
there a way that i can set a custom filter to skim through the content in
these email, if the phrase/s we are looking for them are not found then
archive them but if the phrases are found then mark it as important.
ie. if phrases 'design, architecture, interior design, furniture' are in
the email mark it as important, if not archive email.