Perhaps you should try some spelling variations:
thuat danh » thuat lanh, thuat canh, thuat dan
nghien huu » nghien cuu, nguyen huu, nhiem huu
van thanh » ban thanh, van tuan
thanh dan » thanh san, thanh van, thanh dat
danh hoc » dan hoc, danh hoa, anh hoc
huu toan » huu tuan, cuu toan, huy toan
khoa tan » khoa than, hoa tan, khoa tai
tan khoa » tran khoa, san khoa, van khoa
khoa hoc » hoa hoc
ma hoi » mai hoi, ma hoa, me hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat danh hoc tap, nghien huu toan khoa tan khoa hoc ((ma hoi) OR (xa hoi)) van thanh dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat danh hoc tap, nghien huu toan khoa tan khoa hoc ((ma hoi) OR (xa hoi)) van thanh dan*".