Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, hanh mang, hanh tung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
cong san » cong tac
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau
va dung » van dung, va duong, vat dung

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