Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
thong dong » thong duong, thuong dong, thong dung
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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 luat ((thong dong) or (thong cong)) tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh luat ((thong dong) OR (thong cong)) tap toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh luat ((thong dong) or (thong cong)) tap toan ban*.