Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh dinh » thanh dinh, hinh dinh, hanh tinh
cua nhung » va nhung
dinh cua » dinh cuu, sinh cua, dinh cu
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: theo chieu sach - hanh dinh cua nhung cong ((van tan) OR (van ban)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh dinh cua nhung cong ((van tan) OR (van ban)) cau*".