Perhaps you should try some spelling variations:
heats » cheats, heat, heads
cheat » wheat, chat, chest
hears » hearts, years, heart
spear » shear, speak, spar
sheath » heath
solution » solutions

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: ((heats OR (cheat OR cheap)) OR ((hears OR spear) OR sheath)) of mixing AND solution.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((heats or (cheat OR cheap)) or ((hears or spear) or sheath)) of mixing and solution".
• Adding a wildcard symbol may retrieve word variants: ((heats or (cheat OR cheap)) or ((hears or spear) or sheath)) of mixing and solution*.