Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chieu sang » chieu sach, chieu xanh, hieu lang
cong luong » cong thuong, nang luong, cong dong
chau tinh » cuu tinh, ha tinh, cua tinh
cong lang » cong vang, cong quang, cong ngang
tan ca » tan cua, tang ca, dan ca
luat » luan, xuat

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 (chau tinh)) - canh trinh luat thuong ((cong lang) OR (cong luong)) tan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chau tinh)) - canh trinh luat thuong ((cong lang) OR (cong luong)) tan ca.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chau tinh)) - canh trinh luat thuong ((cong lang) OR (cong luong)) tan ca".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chau tinh)) - canh trinh luat thuong ((cong lang) OR (cong luong)) tan ca*.