Perhaps you should try some spelling variations:
cheng than » cheng zhang, changes than
cheng guan » thong guan
genome can » genre can, genome scale, genomen bank
cheng han » chen hao
chik hong » china hong, thi hong
can chik » can china, can child, yang chik
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan ((((cheng than) OR (cheng han))) or (cheng guan)) human genome can chik hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan ((((cheng than) OR (cheng han))) OR (cheng guan)) human genome can chik hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan ((((cheng than) OR (cheng han))) or (cheng guan)) human genome can chik hong yu ;*".