Those are pun-based catchphrases for the job search service by the name of .
First of all, is the _**imperative**_ form of /; therefore, it is a verb. In case someone is wondering, this has no relation to the ("that") as in // **** /.
In fact, the two 's are even pronounced quite differently -- {HL} for the verb and {LH} for the demonstrative pronoun.
> Noun + means "Let there be [noun]!"
One of the nouns that are most often used in the expression above is {} ("happiness"). So, for instance, {} means " _ **Wish you happiness!**_ ", " _ **Much happiness to you!**_ ", etc. To the newly weds, we often say {}.
Now, , as in searching on the internet, sounds sort of like {} except for the length of the first syllable, which makes this pun work. You are turning the common phrase into an advertisement catchphrase for the job search company.
> "Let there be Search for recruiting staff!" ←
>
> "Let there be Search for job-hunting!" ←