Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » thong cong, hang cong, nhung don
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
tang va » trang va, tang van, thang va

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 tang va ((nhung cong) OR (dung cong)) dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tang va ((nhung cong) OR (dung cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tang va ((nhung cong) OR (dung cong)) dan toan cao*.