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