Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chat » tinh chat, trinh luat, trinh han
gioi viet » nguoi viet, gian viet, gia viet
trinh cau » trinh chao, trinh tu, trinh han
trinh cac » trinh chao, trinh cham, trinh han
chat ban » nhat ban, chat ran, cua ban
so viet » hoc viet
oi viet » hoi viet, o viet, cuoi viet
cac cay » cac cam, cac cap, cac cau
van cac » van hac, van cau, van bac
tan van » tran van, tang van, luan van
ban vat » bang vat, ben vat, ban va
cac van » cac dan
cau tan » cau tao, cao tan, cau van
cay co » cac co, tay co, cay cong
vat ca » vat cua, vat va, vat co
ca cay » cua cay, ca cac, ca cao
van va » van vat, van van, ban va
va ca » va cac, va cao, va cai
co h » cao h, co ho, co _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( chuong trinh chat ban vat ca cay co h((oi viet) OR (gioi viet)) nam ) or ( chuong trinh cac van va ca cay co ((oi viet) OR (gioi viet)) nam ))) or ( chuong trinh cau tan van cac cay co so viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh chat ban vat ca cay co h((oi viet) OR (gioi viet)) nam ) OR ( chuong trinh cac van va ca cay co ((oi viet) OR (gioi viet)) nam ))) OR ( chuong trinh cau tan van cac cay co so viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh chat ban vat ca cay co h((oi viet) OR (gioi viet)) nam ) or ( chuong trinh cac van va ca cay co ((oi viet) OR (gioi viet)) nam ))) or ( chuong trinh cau tan van cac cay co so viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (((( chuong trinh chat ban vat ca cay co h((oi viet) OR (gioi viet)) nam ) or ( chuong trinh cac van va ca cay co ((oi viet) OR (gioi viet)) nam ))) or ( chuong trinh cau tan van cac cay co so viet nam ))*.