Perhaps you should try some spelling variations:
"coder coder coverage moodle problems" » "coder coder coverage models problems" (Expand search), "coder coder coverage made problems" (Expand search), "coder coder coverage moral problems" (Expand search), "coder code coverage moodle problems" (Expand search), "coder cancer coverage moodle problems" (Expand search), "coder center coverage moodle problems" (Expand search), "coder decoder coverage moodle problems" (Expand search), "code code coverage moodle problems" (Expand search), "decoder codec coverage moodle problems" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder coverage moodle problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder coverage moodle problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder coverage moodle problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder coverage moodle problems") OR ("api python python python programming"))*.