Perhaps you should try some spelling variations:
yang 5.2.2 » fang 5.2.3, making 5.2.2
yang liang » wang liang, yan liang, yang yang
gan guan » yan guan, quan guan, fan guon
tan puay » tan hua
tuan hua » tan hua, tuan vu, yuan hui
long du » long do, long run, long did
long d » long do, long _, long 2

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: ((yang liang) OR (gan guan)) ((tan puay) OR (tuan hua)) du yang 5.2.2 ((long du) OR (long d)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang liang) or (gan guan)) ((tan puay) or (tuan hua)) du yang 5.2.2 ((long du) OR (long d)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (gan guan)) ((tan puay) or (tuan hua)) du yang 5.2.2 ((long du) OR (long d)) ;*.