Perhaps you should try some spelling variations:
wages compensation » based compensation, workers compensation, labor compensation
development band » development bank, development banks
technology used » technology use, technology based, technology users
used innovation » user innovation, use innovation, based innovation
band africa » bank africa, bank african, can africa
time wages » time wage, time images, time water
17 21 » 17 20
17 2 » 17 20, 17 22, 17 24

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: technology used innovation _ time wages compensation ((17 2) OR (17 21)) development band africa.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "technology used innovation _ time wages compensation ((17 2) OR (17 21)) development band africa.*".