Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trang » thanh trung, canh tranh, hanh trinh
cua thuong » cua truong, cua phuong, ca thuong
trang cua » tranh cua, tang cua, trung cua
thong den » thong dien, thong dan, tuong den
tuong dan » huong dan, tung dan, xuong dan

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 (chieu sang)) - hanh trang cua thuong ((thong den) or (tuong dan)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh trang cua thuong ((thong den) OR (tuong dan)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh trang cua thuong ((thong den) or (tuong dan)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh trang cua thuong ((thong den) or (tuong dan)) van ban*.