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