Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thong tinh » thuong tinh, thong tin, thong minh
cua thong » cua thuong, cua khong, suat thong
cua tong » cua cong, cua dong, cua nong
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 ((chieu xanh) or (chieu sang)) - nhanh quang ((cua thong) OR (cua tong)) thong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - nhanh quang ((cua thong) OR (cua tong)) thong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - nhanh quang ((cua thong) OR (cua tong)) thong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - nhanh quang ((cua thong) OR (cua tong)) thong tinh toan cau*.