Perhaps you should try some spelling variations:
"a telecommunications sector" » "a telecommunications services", "_ telecommunications sector", "i telecommunications sector", "_ telecommunication sector"
"_ cooperation studies" » "_ cooperation series", "_ cooperation sources", "_ cooperation implies"
"jews colonization israel" » "jews communication israel", "jews colonization still", "jews colonization history", "its colonization israel", "mars colonization israel", "re colonization israel"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("_ cooperation studies") or ((("jews colonization israel") or ("a telecommunications sector"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("_ cooperation studies") OR ((("jews colonization israel") OR ("a telecommunications sector")))).
• Removing quotes may allow a broader search: (( _ cooperation studies ) or ((( jews colonization israel ) or ( a telecommunications sector )))).
• Adding a wildcard symbol may retrieve word variants: (("_ cooperation studies") or ((("jews colonization israel") or ("a telecommunications sector"))))*.