Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
tang luan » dung luan
trong van » trong cac
ban cau » bang cau, ban can, van cau

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