Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh huong » thanh huong, anh huong, manh huong
trung cong » truong cong, trong cong, trung uong
huong cua » dung cua
cua trung » cua truong, xuan trung, cua nhung
cong hach » cong sach, cong thanh, cong khanh
ho chiet » ho chieu, ho thiet, hoc thiet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh huong cua trung cong hach ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh huong cua trung cong hach ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh huong cua trung cong hach ((toan ban) OR (van ban))*.