Perhaps you should try some spelling variations:
khong cang » thong cong, hong bang, khong dung
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh toan » thanh hoa, thanh san
doc chieu » doc hieu, doi chieu, toc thieu
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu xanh - hanh ((tang cua) OR (hang cua)) khong cang ((tinh toan) or (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu xanh - hanh ((tang cua) OR (hang cua)) khong cang ((tinh toan) OR (thanh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu xanh - hanh ((tang cua) OR (hang cua)) khong cang ((tinh toan) or (thanh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: doc chieu xanh - hanh ((tang cua) OR (hang cua)) khong cang ((tinh toan) or (thanh toan)) cau*.