Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
duong xanh » duong manh, duong van, duong sach
trinh va » trinh van, trinh vat, trinh ve
va tuong » va thuong, va thong, xa truong
toan cao » toan ban, toan tap
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) OR (chieu sach)) - hanh trinh va tuong duong xanh ((tuan cu) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - hanh trinh va tuong duong xanh ((tuan cu) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - hanh trinh va tuong duong xanh ((tuan cu) or (toan cao))*".