Perhaps you should try some spelling variations:
choi thuc » hoc thuc, hoi chuc, cho thue
thuc xanh » thuc hanh, thuc thanh, thuc dan
tranh van » tran van, trinh van, thanh van
van trong » van truong, vang trong, ban trong
cong tan » cong tac, cong san, cong thanh
ran cau » van cau, ban cau, tran chau
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: choi thuc xanh - canh tranh van trong cong tan ((ran cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: choi thuc xanh - canh tranh van trong cong tan ((ran cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: choi thuc xanh - canh tranh van trong cong tan ((ran cau) or (can cau))*.