This is the 7427th most frequent Korean word.
총력
"총력" means "all-out effort" or "full force."
총력 here means 'total effort' or 'all one's strength' and emphasizes a thorough effort being applied to achieve a goal.
우리는 이번 프로젝트를 성공시키기 위해 총력을 기울여야 합니다.
We must exert total effort to make this project succeed.
총력적인 in this sentence is an adjectival form, meaning 'comprehensive' or 'all-encompassing', used to describe intensive measures.
회사를 살리기 위한 총력적인 방안을 강구하고 있습니다.
We are devising comprehensive measures to save the company.
총력을 다해 means 'giving it one's all' and is an idiomatic expression advocating the use of full strength or every possible effort.