Perhaps you should try some spelling variations:
chiet tach » chieu sach
canh manh » lanh manh, canh tranh, van manh
cong cong » cong dong, trong cong, dung cong
cong pham » cong phan, chong phap, cong ha
pham toan » pham tuan, pham tan, phap toan
ho chiet » ho chieu, ho thiet, hoc thiet
toan ban » van ban

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 - ((canh manh) OR (cach mang)) cua cong cong pham toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((canh manh) OR (cach mang)) cua cong cong pham toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((canh manh) OR (cach mang)) cua cong cong pham toan ban*.