Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
chieu xanh » chieu sach, chieu sang, chieu tinh
luong tinh » luong tin, long tinh, luong ninh
chua xang » chua nang, chuc nang, chu bang
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban 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: theo ((chua xang) or (chieu xanh)) - hanh ((tang cua) OR (mang cua)) cong luong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chieu xanh)) - hanh ((tang cua) OR (mang cua)) cong luong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chieu xanh)) - hanh ((tang cua) OR (mang cua)) cong luong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chieu xanh)) - hanh ((tang cua) OR (mang cua)) cong luong tinh toan cau*.