Perhaps you should try some spelling variations:
"coder coder mesh optimization problems" » "coder coder with optimization problems" (Expand search), "coder coder path optimization problems" (Expand search), "coder coder search optimization problems" (Expand search), "coder decoder mesh optimization problems" (Expand search), "code code mesh optimization problems" (Expand search), "decoder codec mesh optimization problems" (Expand search), "coder model mesh optimization problems" (Expand search), "coder power mesh optimization problems" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder mesh optimization problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder mesh optimization problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder mesh optimization problems") OR ("api python python python programming"))*.