Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
ba truong » bo truong, ba trung, sa truong
xa truong » cac truong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu sach - hanh trung ((ba truong) OR (xa truong)) cong manh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trung ((ba truong) OR (xa truong)) cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trung ((ba truong) OR (xa truong)) cong manh toan cau*.