search [and] ZNM 18.* dtm (201810* or 201811* or 201812*) YOP (2018 or 2017 or 2016 or 2015 or 2014) sgn(KA* or KB* or KC* or KD* or KE* or KF* or KG* or KH* or KI* or KJ* or KK* or KL* or KM* or KN* or KO* or KP* or KQ* or KR* or KS* or KT* or KU* or KV* or KW* or KX* or KY* or KZ*)