Perhaps you should try some spelling variations:
solutions algorithm » solution algorithm, evolution algorithm, evolutionary algorithm
time solutions » time evolution, mild solutions
modified time » modified bi1, modified male
df estimation » _ estimation
modified df » modified _, modified adam, modified bi1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified time solutions algorithm ) or ( modified df estimation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified time solutions algorithm ) OR ( modified df estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified time solutions algorithm ) or ( modified df estimation algorithm ))*.