Perhaps you should try some spelling variations:
estimation estimation » distribution estimation, motion estimation, position estimation
estimation first » estimating first, estimation fast, restoration first
first section » first session, first edition, first second
new openmp » new open
how openmp » how open

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

• Performing a fuzzy search may retrieve terms with similar spellings: estimation estimation first section ((net openg) or (((new openmp) or (how openmp))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: estimation estimation first section ((net openg) OR (((new openmp) OR (how openmp)))).
• Adding a wildcard symbol may retrieve word variants: estimation estimation first section ((net openg) or (((new openmp) or (how openmp))))*.