Complex sentence: I personally do not have the opportunity to collaborate with scientific institutions, societies or journals in the field of entomology, but I do communicate with several professional entomologists from Ukraine, Russia, England, France and Thailand.
Split into simpler sentences: I personally do not have the opportunity to collaborate with scientific institutions, societies or journals in the field of entomology. But personally private communicate with several professional entomologists from Ukraine, Russia, England, France and Thailand.