Perhaps you should try some spelling variations:
thieu lang » hieu lang, thieu khang, thieu quang
cong cong » cong dong, trong cong, dung cong
tri quan » trinh quan, hai quan, mai quan
cong dat » cong dan, dong dat, cong da
dat than » dat thanh, dan than, dat khanh
than cap » khan cap, thanh lap, thanh cac
lan van » luan van, lang van, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu lang - thanh ((tri quan) or (lan van)) cong cong dat than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu lang - thanh ((tri quan) OR (lan van)) cong cong dat than cap*.