Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
luan chung » luan chinh
chung dang » phung dang, chuong dong, nhung lang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dung » thanh dung, anh dung, hanh dong
dang van » hoang van, hang va
van van » tan van, san van, van vat

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) OR (chieu tinh)) - hanh dung luan chung dang van van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu tinh)) - hanh dung luan chung dang van van ban*".