Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh cau, tinh cao
hoi viet » thai viet, cuoi viet, gioi viet
lanh dan » lanh dao, canh dan, lan dan
trinh tu » trinh ky, trinh do
hai viet » thai viet, mai viet, tai viet
cao lanh » cao lan, cao anh, cao danh
trinh co » trinh do, trinh cong, trinh hoa
oi viet » o viet, cuoi viet, gioi viet
cac cau » cac mau, bac cau, ca cau
lanh va » hanh va, anh va, lanh dao
tu lanh » tu hanh, tu lenh, tu manh
cay cot » cay coc, cac cot, cay cat
cot hai » co hai, cot hat, cong hai
cac cay » cac cam, cac cap, tac cay
lan va » luan va, lan van, lang va
cay co » cac co, tay co, cay cong
ca cay » cua cay, ca cac, ca cao
co lan » cao lan, co ban, co dan
co cay » cho cay, co cau, co may
va co » vo 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 co lan va ((cac cay) or (cac cau)) cot s((oi viet) OR (hoi viet)) nam ) or ( chuong trinh cao lanh va co cay cot hai viet nam ))) or ( chuong trinh tu lanh dan ca cay co ((oi viet) OR (hoi viet)) nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( chuong trinh co lan va ((cac cay) OR (cac cau)) cot s((oi viet) OR (hoi viet)) nam ) OR ( chuong trinh cao lanh va co cay cot hai viet nam ))) OR ( chuong trinh tu lanh dan ca cay co ((oi viet) OR (hoi viet)) nam ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( chuong trinh co lan va ((cac cay) or (cac cau)) cot s((oi viet) OR (hoi viet)) nam ) or ( chuong trinh cao lanh va co cay cot hai viet nam ))) or ( chuong trinh tu lanh dan ca cay co ((oi viet) OR (hoi viet)) nam ))*".