Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
manh he » manh ho, manh le, hanh he

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 (((chiet tach) OR (chieu sach)))) - canh manh he thong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (((chiet tach) OR (chieu sach)))) - canh manh he thong cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (((chiet tach) OR (chieu sach)))) - canh manh he thong cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (((chiet tach) OR (chieu sach)))) - canh manh he thong cong dan toan ban*.