Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
chinh sua » chinh su, chinh cua, chinh luan
hang cong » dang cong, hang nong, bang cong
chinh ca » chinh ta, chinh va, chinh tai
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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 xanh) OR (chieu sach)) - hanh ((chinh ca) or (chinh sua)) hang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - hanh ((chinh ca) OR (chinh sua)) hang cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - hanh ((chinh ca) or (chinh sua)) hang cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - hanh ((chinh ca) or (chinh sua)) hang cong tac toan cau*.