Perhaps you should try some spelling variations:
truong trung » tieng trung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, tran tuan
trong hach » trong mach, trong cach, trong hanh
hach toan » thanh toan, manh toan
ho chieu » theo chieu, hoc thieu, doi chieu
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 xanh - thanh ((trung tuan) or (truong trung)) dung trong hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((trung tuan) OR (truong trung)) dung trong hach toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((trung tuan) or (truong trung)) dung trong hach toan cau*.