Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu lang » chieu sang, nhieu tang, hieu van
nhan dang » nhan dan, phan dang, tran dang
dong cong » duong cong, dung cong, dang cong
dang nhu » dang nghe, dang nhat, dang thuy
nhu dong » chu dong, nha dong, phu dong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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)) - nhan dang nhu dong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - nhan dang nhu dong cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - nhan dang nhu dong cong dan toan cau*.