Perhaps you should try some spelling variations:
"and conventional code housing projects" » "and conventional mode housing projects" (Expand search), "and conventional model housing projects" (Expand search), "and conventional corn housing projects" (Expand search), "and conventional home housing projects" (Expand search), "and conventional code using projects" (Expand search), "and conventional co housing projects" (Expand search)
"advanced oxidation from python programming" » "advanced oxidation flow python programming" (Expand search), "advanced oxidation free python programming" (Expand search), "advanced oxidation iron python programming" (Expand search), "advanced oxidation from pathogen programming" (Expand search), "advanced oxidation from anthony programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("and conventional code housing projects") OR ("advanced oxidation from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and conventional code housing projects\") OR (\"advanced oxidation from python programming\"))".
• Removing quotes may allow a broader search: (( and conventional code housing projects ) OR ( advanced oxidation from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and conventional code housing projects") OR ("advanced oxidation from python programming"))*.