Perhaps you should try some spelling variations:
heats » heat, heads, seats
cheats » cheat, cheads, cseats, cheaps, wheats, chats
wheats » wheat, wheads, wseats
cheat » cheap, wheat, chat
heath » death, heat

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 (cheats OR wheats)) OR heath)) of mixing AND (solution" or solutions").
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"(heats or ((cheat or (cheats OR wheats)) or heath)) of mixing and (solution\" or solutions\")".
• Removing quotes may allow a broader search: (heats or ((cheat or (cheats OR wheats)) or heath)) of mixing and (solution or solutions ).
• Adding a wildcard symbol may retrieve word variants: "(heats or ((cheat or (cheats OR wheats)) or heath)) of mixing and (solution" or solutions")*.