Perhaps you should try some spelling variations:
thanh trung » thanh tung
tranh luan » trinh luan, doanh luan, tang luan
tam thang » tam than, nam thang, tat thang
long doan » cong doan, dong doanh, rong doanh
thi hanh » thi thanh
long dan » cong dan, nong dan, long van
doi thi » doi thoi, do thi, doi khi
luat » xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi thi hanh - thanh trung tam thang ((long dan) OR (long doan)) ((tranh luan) or (trinh luat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi thi hanh - thanh trung tam thang ((long dan) OR (long doan)) ((tranh luan) OR (trinh luat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi thi hanh - thanh trung tam thang ((long dan) OR (long doan)) ((tranh luan) or (trinh luat))".
• Adding a wildcard symbol may retrieve word variants: doi thi hanh - thanh trung tam thang ((long dan) OR (long doan)) ((tranh luan) or (trinh luat))*.