Perhaps you should try some spelling variations:
nganh khong » nganh cong, nganh nong, nganh khoa
nhanh chong » thanh cong, khanh phong
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach
va nhan » van nhan, ca nhan, va phan
hoa va » hoa van, hoa xa, hoa vo

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 dong co ((nganh khong) or (nhanh chong)) hoc ma hoa va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu dong co ((nganh khong) OR (nhanh chong)) hoc ma hoa va nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu dong co ((nganh khong) or (nhanh chong)) hoc ma hoa va nhan dan*.