Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
van thong » van thuong, van phong, va thong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chiet tach)) - ((hanh tang) OR (hanh mang)) van thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - ((hanh tang) OR (hanh mang)) van thong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - ((hanh tang) OR (hanh mang)) van thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - ((hanh tang) OR (hanh mang)) van thong cong dan toan cao*.