Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
canh manh » lanh manh, canh tranh, cach mang
dong cong » duong cong, dang cong, cong cong
dung cong » dung trong
doi lieu » duoc lieu, doi chieu, du lieu
manh cua » doanh cua, ban cua
van phan » van phong, van thanh, luan phan

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 - canh manh cua ((dong cong) OR (dung cong)) van phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi lieu tinh - canh manh cua ((dong cong) OR (dung cong)) van phan tu".
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - canh manh cua ((dong cong) OR (dung cong)) van phan tu*.