Perhaps you should try some spelling variations:
canh manh » lanh manh, canh tranh, cach mang
cong cong » cong dong, dung cong, dang cong
cua sinh » hoa sinh
manh cua » doanh cua, ban cua
tac tran » tan tran, tac trai, tac tren
tran cap » than cap, tranh chap, tran chau
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: do ((cua sinh) OR (va sinh)) - canh manh cua ((cong cong) or (trong cong)) tac tran cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: do ((cua sinh) OR (va sinh)) - canh manh cua ((cong cong) OR (trong cong)) tac tran cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "do ((cua sinh) OR (va sinh)) - canh manh cua ((cong cong) or (trong cong)) tac tran cap".
• Adding a wildcard symbol may retrieve word variants: do ((cua sinh) OR (va sinh)) - canh manh cua ((cong cong) or (trong cong)) tac tran cap*.