Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
nhan tao » nhan dan
nhan tai » hang tai, van tai, toan tai
cong dan » cong san, cong tan, huong dan
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 - hanh ((nhan tao) or (nhan tai)) dang cong dan ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((nhan tao) OR (nhan tai)) dang cong dan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((nhan tao) or (nhan tai)) dang cong dan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((nhan tao) or (nhan tai)) dang cong dan ((toan cao) OR (toan ban))*.