Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh doanh » hanh doanh, chinh doanh, doanh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
cua nhung » va nhung
luan hoan » 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 lang - canh doanh cua nhung cong ((quan hoang) OR (luan hoan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - canh doanh cua nhung cong ((quan hoang) OR (luan hoan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh doanh cua nhung cong ((quan hoang) OR (luan hoan)) cao*.