Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
xuat thong » xuat thuong, suat thong, luat thuong
thong cong » trong cong, tong cong, thong thong
hieu lang » hieu quang, nhieu tang, hieu van
hanh mang » nhanh mang, hanh trang, nhanh lang
mang xuat » hang xuat, san xuat, nang suat
cong san » cong tac
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 sang) OR (hieu lang)) - hanh mang xuat thong cong san ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - hanh mang xuat thong cong san ((toan cau) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - hanh mang xuat thong cong san ((toan cau) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - hanh mang xuat thong cong san ((toan cau) or (van ban))*.