Perhaps you should try some spelling variations:
heats » cheats, heat, heads
chears » cheats, clears, hears
aheads » ahead, heads, warheads
chats » chaos, chat, coats
cheath » heath, sheath, cheats, cheaph, wheath, chath
cheat » cheap, wheat, chat

Try widening your search to All Fields.

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 (((chears OR aheads) OR (chats OR (cheath OR cheat))) OR (cheath OR cheat))) of mixing AND (solution" or solutions").
• Removing quotes may allow a broader search: (heats or (((chears or aheads) or (chats or (cheath or cheat))) or (cheath or cheat))) of mixing and (solution or solutions ).
• Adding a wildcard symbol may retrieve word variants: "(heats or (((chears or aheads) or (chats or (cheath or cheat))) or (cheath or cheat))) of mixing and (solution" or solutions")*.