Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » thong cong, hang cong, nhung don
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
ban phan » ban phap, van phan, ban than
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 - canh tranh va ((nhung cong) or (dung cong)) ban phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh tranh va ((nhung cong) OR (dung cong)) ban phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh tranh va ((nhung cong) or (dung cong)) ban phan tap*.