Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
tranh cua » doanh cua, manh cua
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
sat phan » sat nhan, vat phan, xuat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu quang)) - canh tranh cua ((nhung don) or (hang cong)) sat phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu quang)) - canh tranh cua ((nhung don) OR (hang cong)) sat phan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu quang)) - canh tranh cua ((nhung don) or (hang cong)) sat phan cau*.