Perhaps you should try some spelling variations:
cong thuong » hang thuong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, canh tranh, hanh trinh
thuong van » thong van, truong van, thuong va
lieu tinh » trieu tinh, diep tinh, bien tinh
trang cua » tranh cua, tang cua, trung cua
tuan ban » tuan bang, luan ban, quang ban
toan 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 ((lieu tinh) or (chieu sang)) - hanh trang cua cong thuong van ((tuan ban) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (chieu sang)) - hanh trang cua cong thuong van ((tuan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((lieu tinh) or (chieu sang)) - hanh trang cua cong thuong van ((tuan ban) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) or (chieu sang)) - hanh trang cua cong thuong van ((tuan ban) OR (toan ban))*.