Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
than cao » thai cao, than cap, than sao
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: ho chieu sang - hanh tang cua thong cong tan ((than cao) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh tang cua thong cong tan ((than cao) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh tang cua thong cong tan ((than cao) or (toan cao))*.