Perhaps you should try some spelling variations:
"communications development ets history" » "telecommunications development ets history", "community development ets history", "communications development gets history", "communications development east history", "communications development eco history", "communications development its history", "communications development texts history", "communications development meets history"
"comparative management tekno history" » "compensation management tekno history", "comparative management ten history", "comparative management tenant history", "comparative management team history", "comparative management tokyo history", "comparative management euro history", "comparative management kano history"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("comparative management tekno history") or ("communications development ets history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management tekno history") OR ("communications development ets history")).
• Removing quotes may allow a broader search: (( comparative management tekno history ) or ( communications development ets history )).
• Adding a wildcard symbol may retrieve word variants: (("comparative management tekno history") or ("communications development ets history"))*.