Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh tran » hanh trang, thanh tran, hanh tram
dong cong » duong cong, dung cong, dang cong
tuan bang » tuan dang, tuan hoang, thuat bang
tran van » luan van
cong van » cong vang, cong san, song van
tuan ban » toan ban, luan ban, quang 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) or (nhieu tang)) - hanh tran van dong cong van ((tuan ban) OR (tuan bang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (nhieu tang)) - hanh tran van dong cong van ((tuan ban) OR (tuan bang)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (nhieu tang)) - hanh tran van dong cong van ((tuan ban) OR (tuan bang))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (nhieu tang)) - hanh tran van dong cong van ((tuan ban) OR (tuan bang))*.