Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
phan cong » thanh cong
van cong » van dong, van phong, van duong
dan toan » van toan, dan than, manh toan
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: ho ((chieu sach) OR (chinh sach)) - hanh tranh cua ((phan cong) or (van cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - hanh tranh cua ((phan cong) OR (van cong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - hanh tranh cua ((phan cong) or (van cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - hanh tranh cua ((phan cong) or (van cong)) dan toan cao*.