Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh ve, trinh vi
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan tap » phan lap, han tap, pha tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trinh va) OR (trinh vat)) hang cong van phan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trinh va) OR (trinh vat)) hang cong van phan tap".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trinh va) OR (trinh vat)) hang cong van phan tap*.