Perhaps you should try some spelling variations:
thuat danh » thuat canh, thuat dan, thuat dinh
thuat lanh » thuat lap, thuat san
nghien huu » nghien cuu, nguyen huu, nhiem huu
van thanh » ban thanh, van tuan
thanh dan » thanh san, thanh van, thanh dat
huu toan » huu tuan, cuu toan, huy toan
toan hoc » van hoc, hoa hoc, tin hoc
hoc toan » hoc tan, hop toan, hoa toan
khoa hoc » hoa hoc
hoi van » hoi va, hoi dan, hai van
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 danh) OR (thuat lanh)) hoc tap, nghien huu toan hoc toan khoa hoc ma hoi van thanh dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat danh) OR (thuat lanh)) hoc tap, nghien huu toan hoc toan khoa hoc ma hoi van thanh dan".
• Adding a wildcard symbol may retrieve word variants: ((thuat danh) OR (thuat lanh)) hoc tap, nghien huu toan hoc toan khoa hoc ma hoi van thanh dan*.