Perhaps you should try some spelling variations:
"teori belajar muslim sehari usia di" » "teori pelajar muslim sehari usia di", "mari belajar muslim sehari usia di", "teori belajar muslim sendiri usia di", "teori belajar muslim sehari usia dini", "teori belajar muslim sehari dunia di", "teori belajar muslim sehari mulia di"
"seri jelajah islam sejarah dunia dan" » "seri belajar islam sejarah dunia dan", "seri pelajar islam sejarah dunia dan", "seri jelajah alam sejarah dunia dan", "seri jelajah dalam sejarah dunia dan", "seri jelajah islam sejarah dan dan", "seri teladan islam sejarah dunia dan"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("teori belajar muslim sehari usia di") or ("seri jelajah islam sejarah dunia dan"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("teori belajar muslim sehari usia di") OR ("seri jelajah islam sejarah dunia dan")).
• Removing quotes may allow a broader search: (( teori belajar muslim sehari usia di ) or ( seri jelajah islam sejarah dunia dan )).
• Adding a wildcard symbol may retrieve word variants: (("teori belajar muslim sehari usia di") or ("seri jelajah islam sejarah dunia dan"))*.