Add spaces: Isinglass;othergluesofanimalorigin(excl.caseingluesofheading3501)

Answer: Isinglass; other glues of animal origin (excl. casein glues of heading 3501)

Add spaces: Numberofstrokesperflash3-5(About15to20percentoflightningflashesarecomposedofasinglestroke).

Answer: Number of strokes per flash 3-5 (About 15 to 20 percent of lightning flashes are composed of a single stroke).

Add spaces: TheproblemwasthatIndonesianeededtorepairitsinfrastructuredevastatedbyadecadeofwarandrebellion.

Answer:
The problem was that Indonesia needed to repair its infrastructure devastated by a decade of war and rebellion.