Perhaps you should try some spelling variations:
"competent basic education" » "complement basic education", "component basic education", "components basic education"
"competent basic equations" » "complement basic equations", "component basic equations", "components basic equations"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"competent basic education\") OR (\"competent basic equations\"))".
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• Adding a wildcard symbol may retrieve word variants: (("competent basic education") OR ("competent basic equations"))*.