Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung tac » trung tam, trong tac, trung tai
trong tan » trong quan, trong ca, cong tan
ho chieu » theo chieu, hoc thieu, doi chieu
tac dung » sach dung, xay dung, tin dung
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: ho chieu sang - thanh trung tac dung ((trong tan) OR (trong cac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung tac dung ((trong tan) OR (trong cac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung tac dung ((trong tan) OR (trong cac)) toan cau*.