Perhaps you should try some spelling variations:
"rainbow angle" » "rainbow belle", "rainbow rule", "rainbow triangles"
"rainbow table" » "rainbow tables", "rainbow belle", "rainbow labor"
"rainbow cycle" » "rainbow curve"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rainbow angle") OR ("rainbow table"))) OR ("rainbow cycle")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"rainbow angle\") OR (\"rainbow table\"))) or (\"rainbow cycle\"))".
• Removing quotes may allow a broader search: (((( rainbow angle ) OR ( rainbow table ))) or ( rainbow cycle )).
• Adding a wildcard symbol may retrieve word variants: (((("rainbow angle") OR ("rainbow table"))) or ("rainbow cycle"))*.