Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
can ban » toan ban
ban cua » ban quan
van tan » van tuan, van tai, van thanh

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 - can ban cua thong cong ((van tan) or (van ban)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - can ban cua thong cong ((van tan) OR (van ban)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - can ban cua thong cong ((van tan) or (van ban)) ban*.