Perhaps you should try some spelling variations:
trung thuat » trong thuat, thuong thuat, trung tuan
thanh trung » thanh tung
thuat chung » thuat chuong, thuat hung, thuat nhung
hieu lang » chieu sang, hieu quang, nhieu tang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
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: ho ((hieu lang) or (chinh sach)) - thanh trung thuat chung ((cong dan) OR (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - thanh trung thuat chung ((cong dan) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chinh sach)) - thanh trung thuat chung ((cong dan) OR (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chinh sach)) - thanh trung thuat chung ((cong dan) OR (cong tan)) than cau*.