Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh trinh » canh tranh, hanh trinh, canh tinh
trinh va » trinh van, trinh vat, trinh ve
dan phan » doan phan, dan chan, dam phan
van phan » van phong, van thanh, luan phan
ho lieu » co lieu, ho kieu, ho chieu
so lieu » so dieu

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

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