Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
trung cap » truong cao, trung tam
ho chieu » theo chieu, hoc thieu, doi chieu
phan cau » phan dau, phan cac, phan lap

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 xanh - thanh trung cap ((khong cong) or (khong cang)) dan ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trung cap ((khong cong) OR (khong cang)) dan ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh trung cap ((khong cong) or (khong cang)) dan ((phan cau) OR (phan tu))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung cap ((khong cong) or (khong cang)) dan ((phan cau) OR (phan tu))*.