Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
chieu sang » chieu sach, chieu xanh, hieu lang
nhan thong » nhan trong, nhan khong, nhan tong
doi chieu » doc hieu, doi chi, mot chieu
nha thong » nhat thuong, nghe thong, nha truong
duong dan » duong dang, huong dan, duong van
dan van » dang van, doan van, dao van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - nhanh thanh ((nhan thong) or (nha thong)) duong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - nhanh thanh ((nhan thong) OR (nha thong)) duong dan van ban*.