Perhaps you should try some spelling variations:
lien doanh » trien doanh, kihn doanh
dung luong » dung thuong, dung phuong, dung truong
tinh quan » tinh quang, trinh quan, tin quan
hieu luat » hieu qua
tinh dung » trinh dung, tin dung, tinh quang
lien soan » bien soan, lien son, lien quan
van hieu » cao hieu
luong va » dung va
luan » lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quan luan van hieu luat ) or ( tinh dung luong va ((lien soan) OR (lien doanh)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quan luan van hieu luat ) OR ( tinh dung luong va ((lien soan) OR (lien doanh)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quan luan van hieu luat ) or ( tinh dung luong va ((lien soan) OR (lien doanh)) ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh quan luan van hieu luat ) or ( tinh dung luong va ((lien soan) OR (lien doanh)) ))*.