Perhaps you should try some spelling variations:
tranh cua » doanh cua, manh cua
dung cong » dung trong
cong doan » cong dan, cong hoan, dong doanh
cua sinh » hoa sinh
cua dung » cua dang, cua dong, qua dung
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau
va sinh » va kinh, va tinh, vi sinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: a ((cua sinh) or (va sinh)) - canh tranh cua dung cong doan ((phan cac) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: a ((cua sinh) OR (va sinh)) - canh tranh cua dung cong doan ((phan cac) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "a ((cua sinh) or (va sinh)) - canh tranh cua dung cong doan ((phan cac) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: a ((cua sinh) or (va sinh)) - canh tranh cua dung cong doan ((phan cac) OR (phan dau))*.