Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
vang phan » nang phan, quang phan, va phan
ho chiet » ho chieu, ho thiet, hoc thiet
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
van phan » van phong, van thanh, luan phan

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 trinh ((cua dung) OR (cua dang)) cong ((vang phan) or (van phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trinh ((cua dung) OR (cua dang)) cong ((vang phan) OR (van phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh trinh ((cua dung) OR (cua dang)) cong ((vang phan) or (van phan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trinh ((cua dung) OR (cua dang)) cong ((vang phan) or (van phan)) cau*.