Perhaps you should try some spelling variations:
chanh trinh » hanh trinh, thanh trinh, canh tranh
sach nganh » sach ngan, sach tranh, cac nganh
trinh kxy » trinh ky, trinh ly, trinh ke
kxy thuat » ky thuat, ki thuat, my thuat
nganh va » nganh vat, nganh ma, nhanh va
va thuat » ky thuat, ki thuat, va thuc
tu chanh » tu hanh, tu thanh, tu chung
tu sach » thu sach, su sach, te sach
thuat o » thuat do
o hoc » co hoc, mo hoc, so hoc
toan » tran

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 nganh va thuat o hoc ) or ( tu chanh trinh kxy thuat toan khoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach nganh va thuat o hoc ) OR ( tu chanh trinh kxy thuat toan khoa ))*.