Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, nhieu tang, hieu van
trang van » tran van, trang va, trong van
van nhung » van nhuong, va nhung, van hung
ban thanh » ban hanh
ban hang » ngan hang

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 (hieu quang)) - hanh trang van nhung cong ((ban thanh) OR (ban hang)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - hanh trang van nhung cong ((ban thanh) OR (ban hang)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu quang)) - hanh trang van nhung cong ((ban thanh) OR (ban hang)) cac".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - hanh trang van nhung cong ((ban thanh) OR (ban hang)) cac*.