Contextual advertising for bus transportation in Europe and Ukraine

Contextual advertising for the sale of bus transportation tickets for people in Europe and Ukraine.
A strict selection of only selling keywords was made;
Creation of campaigns for each language and flight direction, to display accurate relevant ads;
I set the correct settings to maintain budget expenditure;
Creation of a clear advertising structure;
Selection of negative keywords in the correct match type, to avoid unnecessary budget expenditure;
and many more tricks to make the advertising effective.