Carefully review information from your textbook. Take note of related info, and use it when searching.
For example, when you are searching for Great Hypostyle Hall, it would be helpful to know when it was built (during the 19th Egyptian Dynasty. ca. 1290-1224 BC).
Be aware that spellings can differ, especially over time, and when the words are translated from their original language into English.
Example: ushabti = shabti = shawbti
Searching for "Taharqo as a sphinx" in WorldCat Discovery may bring back a few related books.
Search for "ancient egyptian art sudan" brings up four additional relevant books. Think broadly about your topics and try different keywords.
The first way to see whether a book will help you is by skimming the table of contents, usually located at the beginning of a book, just after the title page.