Proficiency with certain tools can help your search of particular types of traps.
Magic Traps. Magic traps are usually more difficult to detect than non-magic traps.
Any character can make an Intelligence (Arcana) check to try detect a magic trap, in addition to any other checks noted in the trap’s description. The DCs are the same regardless of the check used.
Other Ways to Detect a Trap
Even if there is no active search, the GM can compare the DC to detect a trap with each character’s passive Wisdom (Perception) score to determine if anyone notices the trap in passing.