Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang dali » yang di, yang all, yang li
wide band » wide bandgap
aid zhong » ji zhong
zhong tai » hong tan, hong hai, zhong zhi
bang dai » zhang dai
band aid » brand aid, bank aid, based aid

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang ((yang dali) or (bang dai)) wide band aid zhong tai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ((yang dali) OR (bang dai)) wide band aid zhong tai ;*.