Perhaps you should try some spelling variations:
nhung phong » nhung phuong, nhung chong, nung phong
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhanh manh » nhanh mang, nhanh thanh, nhanh tinh
phong van » phung van, thong van, phong va
manh va » hanh va, anh va, minh 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: hoc ((chieu sach) or (chieu sang)) - nhanh manh va nhung phong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - nhanh manh va nhung phong van van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - nhanh manh va nhung phong van van ban*.