Perhaps you should try some spelling variations:
ngan khong » nganh khong, nhan khong, ngan hang
kon mach » ke mach, ban mach
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
luc ngan » luc nganh, luc nhan, luat ngan
thuoc va » thuc va, thuoc ma, thuong va
nhan dan » phan dau, gian dan, nhan tai
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: kon mach hoc tap, nghien cuu dong luc ngan khong ((thuoc va) or (hoc ma)) hoi ca nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kon mach hoc tap, nghien cuu dong luc ngan khong ((thuoc va) OR (hoc ma)) hoi ca nhan dan.
• Adding a wildcard symbol may retrieve word variants: kon mach hoc tap, nghien cuu dong luc ngan khong ((thuoc va) or (hoc ma)) hoi ca nhan dan*.