Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh dung » thanh duong, thanh tung, thanh hung
huong manh » duong manh, hung manh, phuong danh
luong manh » duong manh, luong thanh, duong minh
dung khoa » dung cho
khoa hung » khoa dung, khoa ung, khoa trung
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) OR (chiet tach)) - thanh dung khoa hung ((huong manh) or (luong manh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - thanh dung khoa hung ((huong manh) OR (luong manh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chiet tach)) - thanh dung khoa hung ((huong manh) or (luong manh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chiet tach)) - thanh dung khoa hung ((huong manh) or (luong manh)) toan cau*.