Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
dong luong » cong luong, dong duong, dong huong
doi thieu » doi chieu, gioi thieu, toc thieu
doanh cua » doanh luan
manh cua » ban cua
luong va » dung va
toan ban » van ban
va toan » van toan, bai toan, tap toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi thieu quang - hanh ((manh cua) or (doanh cua)) dong luong va toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi thieu quang - hanh ((manh cua) OR (doanh cua)) dong luong va toan ban.
• Adding a wildcard symbol may retrieve word variants: doi thieu quang - hanh ((manh cua) or (doanh cua)) dong luong va toan ban*.