Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
tap doan » tap quan
doan tap » toan tap, doan cap, doanh tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo tieu)) sach - hanh tinh cua ((nhung cong) OR (dung cong)) tap doan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) sach - hanh tinh cua ((nhung cong) OR (dung cong)) tap doan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo tieu)) sach - hanh tinh cua ((nhung cong) OR (dung cong)) tap doan tap*".