Perhaps you should try some spelling variations:
cong thuong » hang thuong
tinh hoang » minh hoang, dinh hoang, binh hoang
chieu tinh » trieu tinh, lieu tinh, chau tinh
thuong tan » thuong han, thuong lan, thuong tin
hieu lang » chieu sang, hieu quang, nhieu tang
hoang van » hang va
van cong » van dong, van phong, phan cong
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu lang) OR (chieu tinh)) - tinh hoang van cong thuong tan tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu lang) OR (chieu tinh)) - tinh hoang van cong thuong tan tran van".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu lang) OR (chieu tinh)) - tinh hoang van cong thuong tan tran van*.