Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
xuat thang » xuat thong, xuan thang, xuat thuong
xua thang » xuan thang, xuan thanh, xuan trang
long tinh » cong tinh, trong tinh, luong tin
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 trinh ((xuat thang) OR (xua thang)) long tinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((xuat thang) OR (xua thang)) long tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((xuat thang) OR (xua thang)) long tinh toan cau*.