Perhaps you should try some spelling variations:
complex trans » complex traits (Expand Search), complex trait (Expand Search), complex tears (Expand Search)
knox charles » knott charles (Expand Search), cox charles (Expand Search), fox charles (Expand Search)
set complex » set1 complex (Expand Search), yet complex (Expand Search), onset complex (Expand Search)
charles noe » charles noble (Expand Search), charles nora (Expand Search), charles nfon (Expand Search)
trans ngoc » tran ngoc (Expand Search), trang ngoc (Expand Search), thanh ngoc (Expand Search)
0.9 lera » 0.9 la (Expand Search)
l combs » e combs (Expand Search), _ combs (Expand Search), l comps (Expand Search)
colin n » colin a (Expand Search), colin d (Expand Search), colin _ (Expand Search)
5 set » 5 sets (Expand Search), a set (Expand Search), _ set (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

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: (( j l combs colin n ) OR ((( 5 set complex trans ngoc ) OR ( 0.9 lera knox charles noe ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j l combs colin n ) or ((( 5 set complex trans ngoc ) or ( 0.9 lera knox charles noe ))))*.