Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
tang luan » dung luan
cong bang » cuong bang, dong bang, hong bang
thanh cac » hanh cac, thanh bac, thanh ca
theo chu » theo chieu, cho chu, chao chu
chu xang » chua xang, chu bang, chuc nang
tang cua » mang cua, hang cua, thong cua
than cap » khan cap, thanh lap, than cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xang - hanh ((tang cua) OR (tang luan)) thuong cong bang ((than cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xang - hanh ((tang cua) OR (tang luan)) thuong cong bang ((than cap) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xang - hanh ((tang cua) OR (tang luan)) thuong cong bang ((than cap) or (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: theo chu xang - hanh ((tang cua) OR (tang luan)) thuong cong bang ((than cap) or (thanh cac))*.