Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
trinh he » trinh han, trinh hoa, trinh thi
cong anh » cong danh, dong anh, hong anh
tuan cao » juan cao, quang cao, thuan cam
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - hanh trinh he thong cong anh ((tuan cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - hanh trinh he thong cong anh ((tuan cao) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - hanh trinh he thong cong anh ((tuan cao) or (toan cao))*.