Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
chiet tach » chieu sach
nhan thong » nhan trong, nha thong, nhan khong
hieu lang » hieu quang, nhieu tang, hieu van
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
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 (hieu lang))) or (chiet tach)) - nhan thong tu dung cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sang) OR (hieu lang))) OR (chiet tach)) - nhan thong tu dung cong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chieu sang) OR (hieu lang))) or (chiet tach)) - nhan thong tu dung cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sang) OR (hieu lang))) or (chiet tach)) - nhan thong tu dung cong tinh toan cau*.