Searching shouldnt be this difficult

Your site is cumbersome to search. There should be a way to select options to serach and deselect. LIke for instance in looking for animal encounters I dont want to go to Africa. I'd be nice to be able to exclude items. Also after you add something to your wishlist it would be nice to be able to go right back to where you were before you clicked the trip you added to your wishlist. I've tried hitting the back button but doesnt work right.