Can itraconazole and fluconazole be used in combination?

The patient is 59 years old, due to coughing and sputum on January 22nd in the local provincial hospital, January 30th diagnosed AML-M2a. due to infection the attending physician has not agreed to chemotherapy, coughing and temperature improved on March 14th back to the local county hospital, the same night coughed up sputum from the mucous sputum and back to foamy sputum, coughing a little serious, now infused with ceftezole hospitals do not have an anti-fungal drug oral itraconazole I don’t know if you can not and Fluconazole I don’t know if it is possible to combine it with fluconazole. Or is there any other oral antifungal drugs? Itraconazole and fluconazole are in the same class of drugs, the combination can not increase the efficacy and may increase the side effects, it is recommended not to combine the two drugs. I don’t know what kind of fungus is infected, but Aspergillus is the most common cause of lung infections, so it is recommended to use amphotericin B, or voriconazole, or Cosex etc. Of course, itraconazole injection can be used as well.