Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
nghiep va » nghiep vu
khanh hoa » thanh hoa, hang hoa
danh nhan » doanh nhan, thanh nhan, benh nhan
mach hoc » cach hoc, dich hoc, anh hoc
hong hoa » huong hoa, hoang hoa, hong khoa
hoc danh » hoc dan, hoc anh, hoc hanh
so mach » so sach, tao mach, kon mach
va hong » va thong, va huong, va phong
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so mach hoc tap, nghiep va hong hoa ((nganh khoa) or (khanh hoa)) hoc xa hoc danh nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so mach hoc tap, nghiep va hong hoa ((nganh khoa) OR (khanh hoa)) hoc xa hoc danh nhan va.
• Adding a wildcard symbol may retrieve word variants: so mach hoc tap, nghiep va hong hoa ((nganh khoa) or (khanh hoa)) hoc xa hoc danh nhan va*.