Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
khan cap » khan ap, than cap, phan cac

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 sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((khan cap) OR (khoan cam))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((khan cap) or (khoan cam))*".