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