Add spaces: Storebyroomheatbetween15with30degreesC(59and86degreesF).

Answer: Store by room heat between 15 with 30 degrees C (59 and 86 degrees F).

Add spaces: DeliciousandhugeportionofGreeksalad.Helle'slocalspecialitywasporkandvegetablesinakindof"sausage"madeofbakingpaper.

Answer: Delicious and huge portion of Greek salad. Helle's local speciality was pork and vegetables in a kind of "sausage" made of baking paper.

Add spaces: Insuchscenarios,AVIfilemayfailstoplayanyofthedatastreams

Answer:
In such scenarios, AVI file may fails to play any of the data streams