Haemolymph does not have Haemoglobins. The Red Blood cells consist of many Haemoglobins. It gives the red colour in Red blood cells/ Erythrocytes. Haemolymph does not have haemoglobins. The Haemoglobins also act as a respiratory gas carrier. This is because humans and some animals need a blood circulation system to carry the blood from the heart to all of the organs. Haemolymph are in insects. Insects DO NOT NEED a blood circulation system. Thus, this is why Haemolymph does not transport respiratory gases eg oxygen and carbon dioxide.
Apologies, I explained this in English. I don't know how to explain my answer in Malay.