Keywords may be separated by AND and/or OR statements for greater control of the search results.
For example, Solar AND Panel would generate a result set that contain both words. However, for Solar OR Panel, the result set returned would contain both or either words.
Exact matches can be searched for by enclosing keywords in double-quotes.
For example, "solar charger" would generate a result set which matches the exact string.
Brackets can be used for further control on the result set.
For example, SMA and (Sunny or Island or "three phase").