Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu sach » chinh sach, chiet tach, chieu sang
doanh cua » doanh luan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » ban cua
tan phan » toan phan, than phan, van phan
phan cac » nhan cach, phan dau, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - van ((manh cua) OR (doanh cua)) ((nhung cong) OR (dung cong)) tan phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - van ((manh cua) OR (doanh cua)) ((nhung cong) or (dung cong)) tan phan cac~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - van ((manh cua) OR (doanh cua)) ((nhung cong) or (dung cong)) tan phan cac*.