Left: once-again 又 (image of a hand), right: bird 隹
To use your hand (for catching) a bird - That's difficult!

Left: water 氵, right: difficult 难 (By hand 又 to catch a bird 隹 is difficult.)
(There is only salt water at the coast) The water is difficult (to use) if it is from the coast.

Left: hand 扌, right: difficult 难 (By hand 又 [to catch] a bird 隹 is difficult)
By hand (to select) is difficult, if it is not spread out.

Left: disease 疒 (An ice-冫-cold building 广 makes sick.), inside: difficult 难 (by hand 又 [to catch] a bird 隹 is difficult)
The disease, where you have difficulties, is when being paralyzed.

Left: person 亻, right: difficult 难 (By hand 又 [to catch] a bird 隹 is difficult.)
Persons have difficulties with: exorcism.