Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thanh thong » thanh thuong, thanh hong, thanh chuong
chieu sang » chieu sach, chieu xanh, hieu lang
quan trong » gian trong
san thanh » ban thanh, van thanh, son thanh
thanh lap » thanh san, phan lap, thanh hai
cong san » cong tac

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 sang) or (chinh sach)) - ((thanh thong) OR (thanh thang)) quan trong cong san thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - ((thanh thong) OR (thanh thang)) quan trong cong san thanh lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chinh sach)) - ((thanh thong) OR (thanh thang)) quan trong cong san thanh lap*".