Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
duong cong » dung cong, luong cong, duong trong
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh quan, trinh luan
dong cong » dung cong, dang cong, cong cong
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh ((trinh cua) or (trinh luat)) ((dong cong) OR (duong cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trinh cua) OR (trinh luat)) ((dong cong) OR (duong cong)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trinh cua) or (trinh luat)) ((dong cong) OR (duong cong)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh cua) or (trinh luat)) ((dong cong) OR (duong cong)) manh toan cau*.