In northern Iraq's vast desert Khazer camp, residents are opening street stalls, taking on odd jobs and trying out entirely new professions, anything to scrape out a living. The numbers of people pressing into camps has increased since Iraqi government troops, backed by a U.S.-led coalition, launched an offensive to push Islamic State out of Mosul, the fighters' main Iraqi stronghold. More than 500,000 people have fled there and surrounding areas since October, according to government figures provided by the U.N. refugee agency UNHCR. REUTERS/Muhammad Hamed SEARCH "MOSUL VENDORS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: MIDEAST-CRISES/IRAQ-MOSUL-VENDORS