Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
chinh cua » chinh ca, chinh sua, hinh cua
chinh tai » chinh tri
long doan » cong doan, dong doanh, rong doanh
long dan » cong dan, nong dan, long van
toan tap » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh ((chinh cua) or (chinh tai)) thang ((long dan) OR (long doan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((chinh cua) OR (chinh tai)) thang ((long dan) OR (long doan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh ((chinh cua) or (chinh tai)) thang ((long dan) OR (long doan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((chinh cua) or (chinh tai)) thang ((long dan) OR (long doan)) toan tap*.