Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoc chieu » hoc thieu, hoc hien, hoc dieu
cua trong » cua truong, cua trung, qua trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san than » sang than, san thanh, ban than
than ban » thanh ban, toan ban, than man

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

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