Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
trong dan » trong dang, trong tan, trong ban
trong san » trong cac, cong san, dong san
toan cau » toan cao, toan ban, toan tap

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 - ((hanh mang) or (nhanh thang)) ung dung ((trong dan) OR (trong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh mang) OR (nhanh thang)) ung dung ((trong dan) OR (trong san)) toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((hanh mang) or (nhanh thang)) ung dung ((trong dan) OR (trong san)) toan cau*".