Perhaps you should try some spelling variations:
doanh khoa » toan khoa
nganh hoa » thanh hoa, khanh hoa, danh hoa
xac doanh » cac doanh, xac dinh, van doanh
khoa kham » kho khan, khoa than
nganh co » nganh cong, nganh y, anh co
vu sach » vu bach, su sach, vu khach
thu xac » thau xay

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach ((nganh co) OR (nganh hoa)) khi đong luc ) OR ( thu xac doanh khoa kham đong luc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( vu sach ((nganh co) OR (nganh hoa)) khi đong luc ) or ( thu xac doanh khoa kham đong luc ))~".
• Adding a wildcard symbol may retrieve word variants: (( vu sach ((nganh co) OR (nganh hoa)) khi đong luc ) or ( thu xac doanh khoa kham đong luc ))*.