Perhaps you should try some spelling variations:
tang luan » dung luan
dang cong » dung cong
theo chu » theo chieu, cho chu, chao chu
chu xang » chua xang, chu bang, chuc nang
tang cua » mang cua, hang cua, thong cua
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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)) dang cong san than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xang - hanh ((tang cua) OR (tang luan)) dang cong san than cau".
• Adding a wildcard symbol may retrieve word variants: theo chu xang - hanh ((tang cua) OR (tang luan)) dang cong san than cau*.