Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
khanh van » thanh van, khanh vinh, hanh va
cua nhung » va nhung
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
hanh van » thanh van, hanh va, hanh san
van phan » van phong, luan phan, van ban

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