Perhaps you should try some spelling variations:
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cong dan » cong san, cong tan, huong dan
mang su » dang su, nang su, mang se
bang su » dang su, ban su, nang su
chan tu » phan tu, han tu, chai tu
chon tu » con tu, cho tu, choi tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - cach ((mang su) or (bang su)) dung cong dan ((chan tu) OR (chon tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - cach ((mang su) OR (bang su)) dung cong dan ((chan tu) OR (chon tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - cach ((mang su) or (bang su)) dung cong dan ((chan tu) OR (chon tu))".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - cach ((mang su) or (bang su)) dung cong dan ((chan tu) OR (chon tu))*.