Perhaps you should try some spelling variations:
huang ying » huang jing, huang ting, huang yang
lang yang » wang yang, lang lang, ylang ylang
yang yang » wang yang, wang yan
hua gene » human gene, a gene, hua ren
hua chen » jui chen, yu chen, a chen
hong 7 » hong w, hong a
hong g » hong ng, hong w, hong a
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yang yang ((hua gene) or (hua chen)) huang ying ((((hong 7) OR (hong g))) or (dang hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yang yang ((hua gene) OR (hua chen)) huang ying ((((hong 7) OR (hong g))) OR (dang hai)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yang yang ((hua gene) or (hua chen)) huang ying ((((hong 7) OR (hong g))) or (dang hai)) ;*".