Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
thanh van » thanh dam
losung do » losung d, losung des, losung der
thanh vu » thanh _
pei yang » wei yang, hui yang, yi yang
d losung » i losung, 3 losung, 4 losung
pei yun » lei kyun, mei yung, wei yuan
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yan) or (yang guang)) ((thanh vu) OR (thanh van)) ((pei yang) or (pei yun)) d losung do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (yang guang)) ((thanh vu) OR (thanh van)) ((pei yang) OR (pei yun)) d losung do ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yan) or (yang guang)) ((thanh vu) OR (thanh van)) ((pei yang) or (pei yun)) d losung do ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (yang guang)) ((thanh vu) OR (thanh van)) ((pei yang) or (pei yun)) d losung do ;*.