Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
hieu quang » thieu quang, hieu quan, hieu qua
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
ho hieu » ho chieu, hoi hieu, nho hieu

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