Perhaps you should try some spelling variations:
thuat canh » thuat lanh, thuat cong, thuat san
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
canh hoc » anh hoc, cach hoc, danh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
hoi danh » hop danh, hoc danh, hoi dang
nhan dan » phan dau, gian dan, nhan tai
hoi dan » hoa dan, hoc dan, hoi dap

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 tap, nghien cuu cong hoc doanh khoa hoc ma ((hoi danh) or (hoi dan)) nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat canh hoc tap, nghien cuu cong hoc doanh khoa hoc ma ((hoi danh) OR (hoi dan)) nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuat canh hoc tap, nghien cuu cong hoc doanh khoa hoc ma ((hoi danh) or (hoi dan)) nhan dan*.