Perhaps you should try some spelling variations:
nganh nang » nganh nong, ganh nang, ngan hang
hoa nganh » hoc nganh, khoi nganh, hoa doanh
sach hoc » cach hoc, sach hoi, sach duoc
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
nang hoc » nang doc, nang luc, dong hoc
gian dan » gian lang
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: thu ((sach hoc) OR (mach hoc)) tap, nghien cuu cong hoa nganh nang hoc xa hoc dan gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach hoc) OR (mach hoc)) tap, nghien cuu cong hoa nganh nang hoc xa hoc dan gian dan".
• Adding a wildcard symbol may retrieve word variants: thu ((sach hoc) OR (mach hoc)) tap, nghien cuu cong hoa nganh nang hoc xa hoc dan gian dan*.