Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu nhi) or (chieu xanh)) - hanh trinh cua thong thong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu nhi) OR (chieu xanh)) - hanh trinh cua thong thong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu nhi) or (chieu xanh)) - hanh trinh cua thong thong dan toan tap*.