Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
nhan thong » nhan trong, nha thong, nhan khong
cong tinh » cong trinh, long tinh, cong thanh
cong vinh » cong trinh, trong vinh, cong viec
thong tu » phong tuc, thong tin, thong ke
toan cau » toan cao, toan ban, toan tap
tu dung » tuc dung, tu duong, su dung

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) or (chiet tach)) - nhan thong tu dung ((cong tinh) OR (cong vinh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chiet tach)) - nhan thong tu dung ((cong tinh) OR (cong vinh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chiet tach)) - nhan thong tu dung ((cong tinh) OR (cong vinh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chiet tach)) - nhan thong tu dung ((cong tinh) OR (cong vinh)) toan cau*.