Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh quan
bang cong » dang cong, bang song, hang cong
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » khan cap, thanh lap, thanh 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 ((nhung cong) or (bang cong)) tan ((than cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh cua ((nhung cong) OR (bang cong)) tan ((than cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh cua ((nhung cong) or (bang cong)) tan ((than cap) or (khoan cam))*.