Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
phuong van » phung van, phuong lan, phuong va
phong van » phung van, thong van, phong va
cong sach » ong sach, song sach, duong sach
ho chieu » theo chieu, hoc thieu, mot chieu
mang su » dang su, nang su, bang su

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 - cach mang su dung ((phuong van) OR (phong van)) cong sach~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - cach mang su dung ((phuong van) OR (phong van)) cong sach".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - cach mang su dung ((phuong van) OR (phong van)) cong sach*.