Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
canh tinh » hanh tinh, manh tinh, canh tranh
ho chieu » theo chieu, hoc thieu, doi chieu
san phan » san pham, van phan, dan phan
sat phan » sat nhan, vat phan, xuat 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 chieu sach - ((canh tinh) or (hanh trinh)) va nhung cong ((san phan) OR (sat phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((canh tinh) OR (hanh trinh)) va nhung cong ((san phan) OR (sat phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((canh tinh) or (hanh trinh)) va nhung cong ((san phan) OR (sat phan)) tu".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((canh tinh) or (hanh trinh)) va nhung cong ((san phan) OR (sat phan)) tu*.