Perhaps you should try some spelling variations:
thuat canh » thuat lanh, thuat cong, thuat san
canh hoc » anh hoc, cach hoc, danh hoc
dan khoa » dang khoa, da khoa, san khoa
van gian » van giang, dan gian, van giao
gian dan » gian lang
dan hoa » danh hoa, dan hoat, van hoa
hoi van » hoi va, hoi dan, hai van
mo hoc » mon hoc, co hoc
hoc xa » hoc ma

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 mo hoc ((dan hoa) OR (dan khoa)) hoc xa hoi van gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat canh hoc tap, nghien cuu mo hoc ((dan hoa) OR (dan khoa)) hoc xa hoi van gian dan".
• Adding a wildcard symbol may retrieve word variants: thuat canh hoc tap, nghien cuu mo hoc ((dan hoa) OR (dan khoa)) hoc xa hoi van gian dan*.