Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
chinh tai » chinh tri
tai nhung » thai nhung, thi nhung, tai hung
cong tran » cong tan, cong tuan, cong toan
tran van » luan van
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 tai nhung cong tran van ban~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh chinh tai nhung cong tran van ban*.