Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
thuong thanh » truong thanh, phuong thanh, thong thanh
hanh trung » thanh trung, hanh trang, manh trung
chieu sang » chieu sach, chieu xanh, nhieu tang
trung toan » truong toan, trung tuan, trung tran
hieu lang » hieu quang, nhieu tang, hieu van

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 lang)) - hanh trung toan thong thuong thanh ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - hanh trung toan thong thuong thanh ((toan ban) OR (van ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - hanh trung toan thong thuong thanh ((toan ban) OR (van ban))*".