Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
danh nhan » doanh nhan, thanh nhan, benh nhan
canh hoc » cach hoc, danh hoc, canh chuc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
hoi danh » hop danh, hoi dan, hoc danh
nhan dan » phan dau, gian dan, nhan tai
anh hoc » sinh hoc, benh hoc, hinh hoc
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: thuat ((canh hoc) OR (anh hoc)) tap, nghien cuu dong hoc doanh khoa hoc ma hoi danh nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((canh hoc) OR (anh hoc)) tap, nghien cuu dong hoc doanh khoa hoc ma hoi danh nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuat ((canh hoc) OR (anh hoc)) tap, nghien cuu dong hoc doanh khoa hoc ma hoi danh nhan dan*.