SEM - Search Engine Marketing: Typically refers to search engine marketing specific to pay-per-click (PPC) advertising.
SEM - Search Engine Marketing: ໂດຍປົກກະຕິ ຫມາຍ ເຖິງກາລະຕະຫຼາດເຄື່ອງຈັກຊອກຫາສະເພາະໃນການໂຄສະນາຈ່າຍຕໍ່ກົດ (PPC).