Perhaps you should try some spelling variations:
german scientific » can scientific
bazin scientific » brazil scientific, main scientific, gain scientific
tracking flights » tracking insights, taking flight, tracking xsight
booking flights » boxing flight, modeling flights

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((bazin scientific) OR (german scientific)) ((booking flights) OR (tracking flights)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bazin scientific) or (german scientific)) ((booking flights) OR (tracking flights))".
• Adding a wildcard symbol may retrieve word variants: ((bazin scientific) or (german scientific)) ((booking flights) OR (tracking flights))*.