Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nang cong » nang song, dang cong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » hang va
tran van » luan van
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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 ((trang va) OR (tran van)) nang cong dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trang va) OR (tran van)) nang cong dan than tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trang va) OR (tran van)) nang cong dan than tap*.