Perhaps you should try some spelling variations:
thuong cang » thuong lang, thuong quang, thuong han
chieu sang » chieu sach, chieu xanh, nhieu tang
cua thuong » cua truong, cua phuong, ca thuong
hieu lang » hieu quang, nhieu tang, hieu van
canh van » anh van, can van, cach van
cang san » cong san, cang sau, nang sang
san toan » van toan, dan toan, manh toan
toan ban » van ban
can 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: theo ((chieu sang) OR (hieu lang)) - ((can ban) or (canh van)) cua thuong cang san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - ((can ban) OR (canh van)) cua thuong cang san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - ((can ban) or (canh van)) cua thuong cang san toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - ((can ban) or (canh van)) cua thuong cang san toan ban*.