Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tang luan » dung luan
theo cuu » theo chu, khao cuu, thao cua
hang cua » mang cua, hang ca, huong cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ma » than man, than va, khan ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo cuu van - hanh ((hang cua) or (tang luan)) nhung cong dan than ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo cuu van - hanh ((hang cua) OR (tang luan)) nhung cong dan than ma.
• Adding a wildcard symbol may retrieve word variants: theo cuu van - hanh ((hang cua) or (tang luan)) nhung cong dan than ma*.