Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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 - thanh chuong ((va hang) OR (va lang)) cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh chuong ((va hang) OR (va lang)) cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh chuong ((va hang) OR (va lang)) cong tac toan tap*.