Perhaps you should try some spelling variations:
pengetahuan intergrasi » pengetahuan integrasi, pengetahuan informasi, pengetahuan integritas
pengetahuan interaksi » pengetahuan integrasi, pengetahuan informasi, pengetahuan integritas
"Pengetahuan intergrasi bangsa" » "Pengetahuan intergerasi bangsa", "Pengetahuan integrasi bangsa", "Pengetahuan disintegrasi bangsa"
"Pengetahuan interaksi bangsa" » "Pengetahuan integrasi bangsa", "Pengetahuan intergerasi bangsa", "Pengetahuan interaksi dan"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Pengetahuan interaksi bangsa") OR ("Pengetahuan intergrasi bangsa"))~.
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• Adding a wildcard symbol may retrieve word variants: (("Pengetahuan interaksi bangsa") OR ("Pengetahuan intergrasi bangsa"))*.