Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
cong manh » cong danh, duong manh, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chieu sang) OR (chieu sach)) - hanh tranh cua trong cong manh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chieu sang) OR (chieu sach)) - hanh tranh cua trong cong manh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chieu sang) OR (chieu sach)) - hanh tranh cua trong cong manh ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: chao ((chieu sang) OR (chieu sach)) - hanh tranh cua trong cong manh ((toan cau) or (toan ban))*.