Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
canh trinh » hanh trinh, canh tinh, anh trinh
dung thanh » duong thanh, dong thanh, dang thanh
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ung » cung
dung » dcung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - ((canh trinh) or (canh tranh)) va ung dung thanh ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((canh trinh) OR (canh tranh)) va ung dung thanh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((canh trinh) or (canh tranh)) va ung dung thanh ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((canh trinh) or (canh tranh)) va ung dung thanh ((toan cau) OR (toan ban))*.