Perhaps you should try some spelling variations:
nganh nang » nganh nong, ganh nang, ngan hang
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoc nganh » hoc nhanh
nang duoc » ngang duoc, nang doc, nganh duoc
nhan dan » phan dau, gian dan
sach hoi » sach doi, sach moi, cach thoi
nhan tai » hang tai, van tai, toan tai
cong hoc » dong hoc, cong hoa, cong coc
cac cong » cua cong
duoc ma » duoc lam
hoi tap » hoi dap, hoc tap, hoi tai
tu sach » thu sach, su sach, te sach
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 sach hoi tap, nghien cac cong hoc nganh nang duoc ma hoa va ((nhan dan) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien cac cong hoc nganh nang duoc ma hoa va ((nhan dan) OR (nhan tai))*".