Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, hieu qua, diep quang
thong cong » trong cong, tong cong, thong thong
hanh mang » nhanh mang, hanh trang, nhanh lang
cong doan » cong dan, cong hoan, dong doanh
va thong » va thuong, va phuong, he thong
doan van » doan va, hoang van, luan van
mang va » mang vua, hang va, bang va

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 quang) or (thieu quang)) - hanh mang va thong cong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (thieu quang)) - hanh mang va thong cong doan van ban*.