Perhaps you should try some spelling variations:
duong doan » duong dan, phuong doan, duong van
lieu tinh » trieu tinh, diep tinh, bien tinh
doan phan » doanh phan, toan phan, dan phan
doi lieu » duoc lieu, doi chieu, du lieu
van manh » van minh, van anh, van hanh
cua dang » cua cong, cua ban
phan dau » phan tu, hang dau

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 tinh - van manh ((cua dang) or (van dong)) duong doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - van manh ((cua dang) OR (van dong)) duong doan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - van manh ((cua dang) or (van dong)) duong doan phan dau*.