Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
canh trinh » canh tranh, hanh trinh, canh tinh
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
doi lieu » duoc lieu, doi chieu, tai lieu
van phan » van phong, van thanh, luan phan
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi lieu) or (du lieu)) tinh - canh trinh van ((nhung cong) or (dung cong)) van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi lieu) OR (du lieu)) tinh - canh trinh van ((nhung cong) OR (dung cong)) van phan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi lieu) or (du lieu)) tinh - canh trinh van ((nhung cong) or (dung cong)) van phan cau*.