Perhaps you should try some spelling variations:
thuat canh » thuat lanh, thuat cong, thuat san
doanh khoa » toan khoa
danh gian » dan gian, danh giao, manh giang
canh hoc » anh hoc, cach hoc, danh hoc
cuu dong » cuu cong, cuu tong, cuu long
co doanh » cho doanh, cao doanh, so doanh
khoa hoc » hoa hoc
danh gia » dan gian
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 tap, nghien cuu dong co doanh khoa hoc ma hoi ((danh gian) OR (danh gia)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat canh hoc tap, nghien cuu dong co doanh khoa hoc ma hoi ((danh gian) OR (danh gia)) dan".
• Adding a wildcard symbol may retrieve word variants: thuat canh hoc tap, nghien cuu dong co doanh khoa hoc ma hoi ((danh gian) OR (danh gia)) dan*.