Perhaps you should try some spelling variations:
nhung trans » nhung trang
trans vang » trang vang, frans van, trang van
host range » short range
jie zhang » jia zhang, li zhang, bin zhang
vang his » man his
his host » his house, his coat, his last
jie kang » jin kang, wie kann, jie song

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

• If you are trying to use Boolean operators, they must be ALL CAPS: nhung trans vang his host range ((jie kang) OR (jie zhang)) (saur OR sur) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhung trans vang his host range ((jie kang) OR (jie zhang)) (saur or sur) ;~".
• Adding a wildcard symbol may retrieve word variants: nhung trans vang his host range ((jie kang) OR (jie zhang)) (saur or sur) ;*.