Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
cong luong » cong thuong, nang luong, cong dong
luong toan » luong thanh, truong toan, luong tai
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
bang cong » dang cong, bang song, hang cong
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - hanh ((trang cua) OR (trung cua)) bang cong luong toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh ((trang cua) OR (trung cua)) bang cong luong toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chiet tach)) - hanh ((trang cua) OR (trung cua)) bang cong luong toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - hanh ((trang cua) OR (trung cua)) bang cong luong toan tap*.