Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
nang luong » nang song
luong tinh » luong tin, long tinh, luong ninh
tranh cua » doanh cua, manh cua
cua nang » chua nang, cua dang, cua hang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (chieu tinh)) - hanh tranh cua nang luong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu tinh)) - hanh tranh cua nang luong tinh toan ban*.