Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thien dang » thien bang, thien danh, thien nang
cong tan » cong tac, cong san, cong thanh
dan cong » dang cong, van cong, dan dong
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan lap » phan dau
tan dan » tang dan, tan doan, ban dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu sach) OR (thien dang)) - thanh cong tan dan cong van phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((chieu sach) OR (thien dang)) - thanh cong tan dan cong van phan lap".
• Adding a wildcard symbol may retrieve word variants: toc ((chieu sach) OR (thien dang)) - thanh cong tan dan cong van phan lap*.