Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
dung cong » dung trong
hang cong » dang cong, hang nong, bang cong
doi lieu » duoc lieu, doi chieu, du lieu
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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 tranh cua ((dung cong) or (hang cong)) san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - canh tranh cua ((dung cong) OR (hang cong)) san toan cau*.