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, tran dang
phan dang » phan dau, phan cong, nhan dan
dong cong » duong cong, dung cong, dang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban
ha dong » hoat dong, van dong

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