Perhaps you should try some spelling variations:
twice covid » time covid, voices covid
iii formen » ii formen, die formen, iii form
toke david » rose david
qian wang » yiqian wang, qian rong, qian yan
wang yang » wang yan, wang liang, wang yanling
yang iii » klang iii, yang zili, zwang iii
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: qian wang yang iii formen ((twice covid) or (toke david)) hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: qian wang yang iii formen ((twice covid) OR (toke david)) hong hai ;*.