Perhaps you should try some spelling variations:
trinh chien » trinh thien, trinh nghien, trinh chuyen
chien thong » chien thuong, chien chong, chien thang
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
van than » van thang, van tuan, van phan

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 chien thong cong ((van than) or (van thanh)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh chien thong cong ((van than) OR (van thanh)) cap*.