If you want to create a link that will direct yo your microsite with a certain search engine open you can create it this way:
http://domain.com/home?tripType=ONLY_HOTEL
http://domain.com/home?tripType=ONLY_FLIGHT
http://domain.com/home?tripType=FLIGHT_HOTEL
http://domain.com/home?tripType=ONLY_TICKET
http://domain.com/home?tripType=ONLY_CAR
http://domain.com/home?tripType=MULTI
https://domanin.com/gb/holidays
https://domain.com/home?tripType=ROUTING
https://domain.com/home?tripType=ONLY_HOUSE
https://domain.com/home?tripType=TRIP PLANNNER
https://domain.com/home?tripType=AI_TRIP
https://domain.com/home?tripType=ONLY_TRAIN
https://domain.com/home?tripType=PRIVATE_TOUR
https://domain.com/home?tripType=SPECIAL_TICKET
https://domain.com/home?tripType=CRUISES
https://domain.com/home?tripType=ONLY_INSURANCE
https://domain.com/home?tripType=EVENT_TICKET
Where domain.com will have to be changed to your current domanin, for example http://online.travelcompositor.com/home?tripType=ONLY_CAR
You must hace activated the desired search engine in your microsites for the link to work