Perhaps you should try some spelling variations:
sach hanh » sach danh, sach han, sac hanh
toc sach » hoc sach, doc sach, thuoc sach
thuat co » thuat do, thuat o
nganh ky » nganh y, nganh xay, nganh ma
nganh co » nganh cong, nganh hoa, nganh y
hanh ky » hanh kem
hoc hoc » hoc hoa, toc hoc, hoc hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( toc sach hanh ky thuat co hoc ) or ( tu cac ((nganh ky) OR (nganh co)) huyet hoc hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( toc sach hanh ky thuat co hoc ) OR ( tu cac ((nganh ky) OR (nganh co)) huyet hoc hoc ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( toc sach hanh ky thuat co hoc ) or ( tu cac ((nganh ky) OR (nganh co)) huyet hoc hoc ))*".