Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nang quan » ban quan, nang suat
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
anh nang » ganh nang, anh bang, anh dang
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan ban
luan san » luan van, luan hoan, luan phan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - anh nang quan hang cong anh ((tuan ban) OR (luan san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - anh nang quan hang cong anh ((tuan ban) or (luan san))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - anh nang quan hang cong anh ((tuan ban) or (luan san))*.