Perhaps you should try some spelling variations:
nganh thong » nganh khong, nganh cong, nhanh chong
hoa nganh » hoc nganh, khoi nganh, hoa doanh
thong hoc » thuong hoc, tuong hoc, thong hoa
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
mai khoi » mai khoa, tai khoa, cac khoi
cam nhan » ca nhan, cam chan, cam nang
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach
mai hoi » dai hoi, lai hoi, mai doi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cuu cong hoa nganh thong hoc ((mai hoi) OR (mai khoi)) cam nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu cong hoa nganh thong hoc ((mai hoi) OR (mai khoi)) cam nhan dan".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu cong hoa nganh thong hoc ((mai hoi) OR (mai khoi)) cam nhan dan*.