Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoa doanh » toan doanh, hoa dan
ban thoi » ban thi, ban thai, ban thuoc
khoa hoc » hoa hoc
van gian » van giang, dan gian, van giao
gian dan » gian lang
ban toi » ban moi, ban thi, van toi
cuu mot » cua mot, cuu mo, huu mot
mot hoa » mon hoa, mot khoi, mot loai
hoi van » hoi va, hoi dan, hai van
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: thu ((ban thoi) OR (ban toi)) dap, nghien cuu mot hoa doanh khoa hoc xa hoi van gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((ban thoi) OR (ban toi)) dap, nghien cuu mot hoa doanh khoa hoc xa hoi van gian dan".
• Adding a wildcard symbol may retrieve word variants: thu ((ban thoi) OR (ban toi)) dap, nghien cuu mot hoa doanh khoa hoc xa hoi van gian dan*.