There are eight searchtypes.

1: City search
Fields: city,state,country

2: Country search
Field: country

3: Coordinates search
Field: coordinates  in the following format latitude::longitude:landmarkname

4: Landmark name search
Fields: landmarkname,city,state,country

5: State code search
Field:state

6: postal/zip code search
Field:postalcode

7: airport name or code search
Field: airport

8: Poly Search and Landmark CodeID search
Fields: polyid,locationSearchType,city,state,country