Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hieu manh » hieu nganh, dieu hanh, hien hanh
dang cong » dung cong
trinh vi » trinh va, trinh ve, trinh viet
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
vi dang » vu dang, va dang, vi dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (((hieu manh) or (chieu sach)))) - hanh trinh vi dang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (((hieu manh) OR (chieu sach)))) - hanh trinh vi dang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (((hieu manh) or (chieu sach)))) - hanh trinh vi dang cong dan than cau*.