Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh cong » nhanh chong, thanh cong
hoa nganh » hoc nganh, khoi nganh, hoa doanh
mach hoc » cach hoc, dich hoc, anh hoc
cong hoa » dong hoa, dong hoc, hang hoa
cong hoc » dong hoc, cong coc, cong ho
tu mach » tu cach, tu manh, tu hach
hoi cau » hoi chu, hoc cau, hoa cau
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi va

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 cua cong hoa nganh cong hoc xa ((hoi ca) or (hoi cau)) nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cua cong hoa nganh cong hoc xa ((hoi ca) OR (hoi cau)) nhan va.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cua cong hoa nganh cong hoc xa ((hoi ca) or (hoi cau)) nhan va*.