Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
doanh cua » doanh luan
doan phan » doanh phan, toan phan, doanh nhan
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » ban cua
dan phan » dan chan, van phan, dam phan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh ((manh cua) OR (doanh cua)) nhung cong ((doan phan) OR (dan phan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - canh ((manh cua) or (doanh cua)) nhung cong ((doan phan) OR (dan phan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh ((manh cua) or (doanh cua)) nhung cong ((doan phan) OR (dan phan)) cau*.