Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
luat thong » luat thuong, suat thong, luat trong
xuat thong » xuat thuong, suat thong, luat thuong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((luat thong) OR (xuat thong)) cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((luat thong) OR (xuat thong)) cong tan toan cau*.