Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
trinh vat » trinh van, trinh luat, trinh han
hang cong » dang cong, hang nong, bang cong
san chang » ban hang, dan chan, van khang
cong san » cong tac
chang xu » chang xue, chao xu, thong xu

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 (chiet tach)) - canh ((trinh vat) OR (sinh vat)) hang cong san chang xu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chiet tach)) - canh ((trinh vat) OR (sinh vat)) hang cong san chang xu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chiet tach)) - canh ((trinh vat) OR (sinh vat)) hang cong san chang xu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chiet tach)) - canh ((trinh vat) OR (sinh vat)) hang cong san chang xu*.