Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua trong » cua truong, cua trung, qua trong
cong dan » cong san, cong tan, cong dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - ((hanh tranh) or (hanh trinh)) cua trong ((cong dan) OR (huong dan)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - ((hanh tranh) OR (hanh trinh)) cua trong ((cong dan) OR (huong dan)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet danh - ((hanh tranh) or (hanh trinh)) cua trong ((cong dan) OR (huong dan)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - ((hanh tranh) or (hanh trinh)) cua trong ((cong dan) OR (huong dan)) van ban*.