Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
lanh manh » lanh tranh, lan anh, van manh
dang cong » dung cong
cong cong » cong dong, trong cong, dung cong
manh cua » doanh cua, ban cua
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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)) - lanh manh cua ((dang cong) or (cong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - lanh manh cua ((dang cong) OR (cong cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (hieu quang)) - lanh manh cua ((dang cong) or (cong cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (hieu quang)) - lanh manh cua ((dang cong) or (cong cong)) dan than cau*.