Perhaps you should try some spelling variations:
"_ communication history" » "_ telecommunication history", "_ communication sector", "_ communication theory"
"re colonization history" » "re organization history", "re cooperation history", "re civilization history", "pro colonization history", "_ colonization history", "jews colonization history"
"war decolonization notes" » "war decolonization models", "war decolonization case", "war decolonization indonesia", "_ decolonization notes", "box decolonization notes", "1945 decolonization notes"

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: (((("_ communication history") or ("re colonization history"))) or ("war decolonization notes"))~.
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• Removing quotes may allow a broader search: (((( _ communication history ) or ( re colonization history ))) or ( war decolonization notes )).
• Adding a wildcard symbol may retrieve word variants: (((("_ communication history") or ("re colonization history"))) or ("war decolonization notes"))*.