Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat

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 - canh ((trinh va) OR (trinh ve)) thong cong tac phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - canh ((trinh va) OR (trinh ve)) thong cong tac phan tu".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - canh ((trinh va) OR (trinh ve)) thong cong tac phan tu*.