Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » tong cong, thong thong, phong chong
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
ho chieu » theo chieu, hoc thieu, doi chieu
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

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) or (hanh mang)) cua ((thong cong) OR (trong cong)) san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh tang) OR (hanh mang)) cua ((thong cong) OR (trong cong)) san than tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh tang) or (hanh mang)) cua ((thong cong) OR (trong cong)) san than tap*".