Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
hang hung » dang hung, hang cung, hang hang
hung manh » nhung manh, hung anh, tung manh
manh toan » thanh toan, anh tuan, tinh toan
dong cua » cong cua, huong cua, thong cua
dung cua » dung luan, dung cho
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - anh ((dong cua) OR (dung cua)) hang hung manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu quang)) - anh ((dong cua) OR (dung cua)) hang hung manh toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - anh ((dong cua) OR (dung cua)) hang hung manh toan ban*.