Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thanh thang » thanh thanh, thanh hang, thanh toan
dung cuong » dung cong, dung luong, dang cuong
cuong danh » cuon danh, huong dan, cuong linh
hieu lang » chieu sang, hieu quang, nhieu tang
danh van » doanh van, dang van, dinh van
va dung » van dung, va duong, vat dung

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 qua)) - ((thanh thang) OR (nhanh thang)) va dung cuong danh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu qua)) - ((thanh thang) OR (nhanh thang)) va dung cuong danh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu qua)) - ((thanh thang) OR (nhanh thang)) va dung cuong danh van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu qua)) - ((thanh thang) OR (nhanh thang)) va dung cuong danh van ban*.