Perhaps you should try some spelling variations:
nganh dong » nganh cong, nhanh dong, nganh nong
dong thuoc » dung thuoc, dang thuoc, don thuoc
hoc nganh » hoc nhanh
thuoc ma » hoc ma, duoc ma
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
moi dap » hoi dap, doi dap, moi dang
moi dan » moi dang, hoi dan, doi dan
va nhan » van nhan, ca nhan, va phan
cuu co » huu co, cua co, cuu mo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((moi dap) OR (moi dan)), nghien cuu co hoc nganh dong thuoc ma hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((moi dap) OR (moi dan)), nghien cuu co hoc nganh dong thuoc ma hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: su sach ((moi dap) OR (moi dan)), nghien cuu co hoc nganh dong thuoc ma hoi va nhan dan*.