One thing the Keyword Research experts have taught me (Dan Thies & Andy Beal to name a few), is that you should not be afraid to think outside the box.
ສິ່ງຫນຶ່ງທີ່ຜູ້ຊ່ຽວຊານຄົ້ນຄ້ວາຄໍາຫລັກໄດ້ສອນຂ້ອຍ (Dan Thies & Andy Beal ຊື່ບາງຄົນ), ແມ່ນວ່າທ່ານບໍ່ຄວນຢ້ານຄິດຢູ່ນອກກ່ອງ.