Perhaps you should try some spelling variations:
nhung dung » phuong dung, ung dung, thong dung
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh sinh » hanh tinh, hanh dinh, hinh sinh
sinh cua » manh cua, dinh cuu, sinh va
van tan » van tuan, van tai, van thanh

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 sinh cua ((nhung dung) or (nhung cong)) ((van tan) OR (van ban)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh sinh cua ((nhung dung) OR (nhung cong)) ((van tan) OR (van ban)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh sinh cua ((nhung dung) or (nhung cong)) ((van tan) OR (van ban)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh sinh cua ((nhung dung) or (nhung cong)) ((van tan) OR (van ban)) ban*.