Perhaps you should try some spelling variations:
danh tranh » canh tranh, danh thanh, lanh tranh
sach nganh » sach ngan, sach tranh, cac nganh
thuat hoa » thuat toan, thuyet hoa, thuat do
nganh kxy » nganh ky, nganh y, nganh xay
kxy thuat » ki thuat, my thuat, ky thua
tranh ky » trinh ky, thanh ky, hanh ky
thu sach » tu sach, thuat sach, thuoc sach
thuat va » thuyet va, thuat xay, thuat bai
te danh » le danh, tac danh
va hoc » van hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te danh tranh ky thuat hoa hoc ) or ( thu sach nganh kxy thuat va hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te danh tranh ky thuat hoa hoc ) OR ( thu sach nganh kxy thuat va hoc )).
• Adding a wildcard symbol may retrieve word variants: (( te danh tranh ky thuat hoa hoc ) or ( thu sach nganh kxy thuat va hoc ))*.