Perhaps you should try some spelling variations:
test gain » heat gain, test gap, test gas
gain ying » jin ying, fan ying, ran ying
jeong ghi » hong ghi
lag test » lag heat
ying jin » yang jin, jing ji, yang jie
jeong mi » jeong _, jeong su, jeong 情
dong » doing, long, done

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dong (sin or skin) lag test gain ying jin ((jeong ghi) or (jeong mi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong (sin OR skin) lag test gain ying jin ((jeong ghi) OR (jeong mi)) ;.
• Adding a wildcard symbol may retrieve word variants: dong (sin or skin) lag test gain ying jin ((jeong ghi) or (jeong mi)) ;*.