Perhaps you should try some spelling variations:
trong chuan » thong chuan, trong thuan, trong chuong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trong chan » trong cham, trong can, trong nhan
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
hang cong » dang cong, hang nong, bang cong
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) or (chieu sang)) - chinh ((trong chuan) or (trong chan)) hang cong thanh than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sang)) - chinh ((trong chuan) OR (trong chan)) hang cong thanh than cao.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sang)) - chinh ((trong chuan) or (trong chan)) hang cong thanh than cao*.