Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
dung duong » dung dong, dong duong, dung dung
duong manh » duong van
hieu manh » hieu nganh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
manh toan » thanh toan, anh tuan, tinh toan
cua dung » cua dang, cua dong, qua dung
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: toc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - hanh tranh cua dung duong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (((chieu xanh) OR (chieu sang)))) - hanh tranh cua dung duong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - hanh tranh cua dung duong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - hanh tranh cua dung duong manh toan cau*.