Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » canh tranh, hanh trinh, minh trang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
quan cau » quang cao, quan ha, quan cua
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: ho chieu sang - ((hanh trang) or (thanh trung)) cua dung cong trinh ((quan cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh trang) OR (thanh trung)) cua dung cong trinh ((quan cau) OR (toan cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh trang) or (thanh trung)) cua dung cong trinh ((quan cau) OR (toan cau))*".