Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sang » chieu sach, chieu xanh, hieu lang
thang long » thanh cong
doi chieu » doc hieu, doi chi, mot chieu
thuong va » truong va, thong va, thuong mai
hanh dong » anh dong, ha dong
tac phan » tac pham, tai phan, tac phat
phan dau » phan tu, hang dau

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 - thanh thuong va ((hanh dong) OR (thang long)) tac phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh thuong va ((hanh dong) OR (thang long)) tac phan dau*".