Perhaps you should try some spelling variations:
"advanced modulation _ computer program" » "advanced calculation _ computer program" (Expand search), "advanced oxidation _ computer program" (Expand search)
"advanced simulation from composting program" » "advanced calculation from composting program" (Expand search), "advanced simulation from computing program" (Expand search), "advanced simulation from composting process" (Expand search), "advanced simulation from consulting program" (Expand search), "advanced simulation co composting program" (Expand search), "advanced simulation of composting program" (Expand search), "advanced simulation from compost program" (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: (("advanced modulation _ computer program") OR ("advanced simulation from composting program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation _ computer program\") OR (\"advanced simulation from composting program\"))".
• Removing quotes may allow a broader search: (( advanced modulation _ computer program ) OR ( advanced simulation from composting program )).
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation _ computer program") OR ("advanced simulation from composting program"))*.