Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
anh nang » ganh nang, anh bang, anh dang
nang cua » mang cua, hang cua, nang dua
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - anh nang cua ((nhung cong) or (dang cong)) manh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - anh nang cua ((nhung cong) OR (dang cong)) manh ((toan cao) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - anh nang cua ((nhung cong) or (dang cong)) manh ((toan cao) OR (toan ban))*".