Perhaps you should try some spelling variations:
nganh xay » nganh mac, nganh y, nganh ma
xay thuat » ky thuat, my thuat, va thuat
thu sach » thuat sach, thuoc sach, thu hoach
thuat do » thuat o
tu sach » te sach, tu cach, vu sach
su sach » so sach, vu sach
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: ((((tu sach) or (thu sach))) or (su sach)) nganh xay thuat do hoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu sach))) OR (su sach)) nganh xay thuat do hoc.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (thu sach))) or (su sach)) nganh xay thuat do hoc*.