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

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Pengetahuan interaksi bangsa") OR ("Pengetahuan intergerasi bangsa"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Pengetahuan interaksi bangsa\") OR (\"Pengetahuan intergerasi bangsa\"))".
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• Adding a wildcard symbol may retrieve word variants: (("Pengetahuan interaksi bangsa") OR ("Pengetahuan intergerasi bangsa"))*.