Perhaps you should try some spelling variations:
xuan phuong » luan phuong, xuan huong, xuat phuong
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trinh » canh tranh, hanh chinh
luan phong » luan phuong, van phong, luan phan
trinh toan » tinh toan, thanh toan, trinh han
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)) - hanh trinh ((luan phong) OR (xuan phuong)) cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - hanh trinh ((luan phong) OR (xuan phuong)) cong trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - hanh trinh ((luan phong) OR (xuan phuong)) cong trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - hanh trinh ((luan phong) OR (xuan phuong)) cong trinh toan cau*.