how to make a keyword ranks high in google?

now, i have an online store which sells wargame tools and Tactical Gear .

http://goldsuitcase.com/

Code (markup):

. on the site there is a product named "Tactical Molle Plate Carrier Recon Armor Vest Multi Camo " how i can promote it and make each user find it easy on google.

if i do a keyword "plate carrier vest". i want to rank high in google. what ways i should do ? many thanks

 

Fudu question! same thing is happening again and again.