Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
bang cong » dang cong, bang song, hang cong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

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