Perhaps you should try some spelling variations:
information propagation » information presentation, information organization
propagation bai » propagation basic, propagation a, propagation lab
bai dimensional » bi dimensional, a dimensional, ii dimensional
method laser » methods laser, method based, method base
methods user » methods used, methods use, methods uses
method case » methods case, method based

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

• Performing a fuzzy search may retrieve terms with similar spellings: information propagation bai dimensional ((((method laser) or (method case))) or (methods user))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information propagation bai dimensional ((((method laser) OR (method case))) OR (methods user)).
• Adding a wildcard symbol may retrieve word variants: information propagation bai dimensional ((((method laser) or (method case))) or (methods user))*.