Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
khong cong » thong cong, khong cang, khong con
chong cong » cong cong, thong cong, cuong cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
lanh manh » lanh tranh, lan anh, van manh
manh cua » doanh cua, ban cua
ban toan » bai toan, ban than, van 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 ((hieu manh) or (chieu sach)) - lanh manh cua ((khong cong) or (chong cong)) ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - lanh manh cua ((khong cong) OR (chong cong)) ban toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - lanh manh cua ((khong cong) or (chong cong)) ban toan cao*.