Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
chinh luan » chinh ngan, trinh luan, binh luan
hieu lang » chieu sang, hieu quang, nhieu tang
cong manh » cong danh, duong manh, hoang manh
luan ban » luan van, luan san, luan han
toan ban » van 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 luan ban ((cong manh) or (cong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh chinh luan ban ((cong manh) OR (cong thanh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh chinh luan ban ((cong manh) or (cong thanh)) toan ban*.