Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh dap » trinh lap, trinh da, trinh dan
dap nhung » vap nhung, va nhung, dap ung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 (chinh sach)) - hanh trinh dap nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chinh sach)) - hanh trinh dap nhung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chinh sach)) - hanh trinh dap nhung cong dan toan cau*.