Perhaps you should try some spelling variations:
sach hanh » sach danh, sach han, sac hanh
cac nganh » hoc nganh
ly chuyen » day chuyen, ke chuyen, va chuyen
toc sach » hoc sach, doc sach, thuoc sach
thuat do » thuat o
nganh ly » nganh y, nganh ky, nganh xay
hanh ky » hanh kem
hoc hoc » hoc hoa, hoc hoi, duoc hoc
toc hoc » toan hoc, duoc hoc
do hoc » co hoc, do hoa, du hoc

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 do hoc ) or ( tu cac nganh ly chuyen ((hoc hoc) OR (toc hoc)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( toc sach hanh ky thuat do hoc ) OR ( tu cac nganh ly chuyen ((hoc hoc) OR (toc hoc)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( toc sach hanh ky thuat do hoc ) or ( tu cac nganh ly chuyen ((hoc hoc) OR (toc hoc)) ))".
• Adding a wildcard symbol may retrieve word variants: (( toc sach hanh ky thuat do hoc ) or ( tu cac nganh ly chuyen ((hoc hoc) OR (toc hoc)) ))*.