Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
thuong cong » thong cong, thuong con, truong cong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh va » tranh van, trang va, trinh va
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 - hanh tranh va ((thuong cong) OR (thuong dong)) ((dan toan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh tranh va ((thuong cong) OR (thuong dong)) ((dan toan) OR (van tuan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - hanh tranh va ((thuong cong) OR (thuong dong)) ((dan toan) or (van tuan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh tranh va ((thuong cong) OR (thuong dong)) ((dan toan) or (van tuan)) ban*.