The Quest For More Money is the ninth volume of the No Need For Tenchi! manga series, written and drawn by Hitoshi Okuda.
From the back cover of the Viz Graphic Novel:
After a slightly-too-big party, the Tenchi household wakes to face one of the most dreaded events in the universe: they're broke! Following a strange dream and a buried memory, Ryoko leads the group into space in search of a lost treasure... only to find that their potential source of revenue is guarded by the man she loved before Tenchi! With a villainous space pirate and a "chu"-squeaking robot in hot pursuit, Ryoko must decide whether to trust her love for Tenchi or rekindle her relationship with Ibara... a love lost 800 years in the past.
Chapters
In the English graphic novels, each chapter is numbered and preceded with the phrase "Tales of Tenchi." However, each volume restarts the numbering, replicating the number of each of the comic books as originally published by Viz.