Perhaps you should try some spelling variations:
hieu sang » chieu sang, hieu lang, hieu quang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: doc hieu sang - canh tranh cua nhung ((cong dan) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sang - canh tranh cua nhung ((cong dan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - canh tranh cua nhung ((cong dan) OR (cong san)) than cau*.