Perhaps you should try some spelling variations:
things hough » things through, things you, things found
theme first » them first, time first, tree first
main theme » main themes, main theorem
kong main » kong remain, kong mario, kong maps
douglas b » douglas f, douglas w, douglas m
douglas a » douglas f, douglas w
tan kong » tan hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: tan kong main theme first things hough ((douglas b) OR (douglas a)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan kong main theme first things hough ((douglas b) OR (douglas a)) ;*".