Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
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 ((hieu lang) or (trieu tinh)) - hanh trinh cua nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (trieu tinh)) - hanh trinh cua nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (trieu tinh)) - hanh trinh cua nhung cong tac toan cau*.