Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong trong » cong thuong, duong trong, cong trinh
trong quan » thong quan, tong quan, thong quang
dung phong » dung phuong, duong phong, rung phong
quan dung » quang dung, quan duong, qua dung
phong van » phung van, thong van, phong va
van van » tan van, san van, van vat

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 (chieu sach)) - cong trong quan dung phong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - cong trong quan dung phong van van ban*.