Perhaps you should try some spelling variations:
chieu lang » chieu sang, hieu lang, chi lang
truong cao » truong dai
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
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 lang - thanh ((trung va) or (truong cao)) dang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu lang - thanh ((trung va) OR (truong cao)) dang cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu lang - thanh ((trung va) or (truong cao)) dang cong tac toan cau*.