Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh vat, trinh ve
trinh vi » trinh ve, trinh viet, trinh van
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - hanh ((trinh va) or (trinh vi)) nhung cong ((dan than) OR (dan chan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh va) OR (trinh vi)) nhung cong ((dan than) OR (dan chan)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh va) or (trinh vi)) nhung cong ((dan than) OR (dan chan)) cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh va) or (trinh vi)) nhung cong ((dan than) OR (dan chan)) cap*.