Perhaps you should try some spelling variations:
chuong trinh » cong trinh
chuong tinh » khuong tinh, thuong tinh, phuong trinh
cay lanh » cao lan, cay lam
soi viet » hoi viet, oi viet, doi viet
so viet » hoc viet
cay dan » cac dan
tinh ca » tinh cao, tinh cua, tinh va
cac cay » ca cay, cac cam, cac cap
ca dan » cac dan, ca dao
cay co » cac co, tay co, cay cong
dan va » doan va, dan ca, ban va

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 ((cay dan) or (cay lanh)) va cac cay co ((soi viet) OR (so viet)) nam ) or ( chuong tinh ca dan va cac cay co ((soi viet) OR (so viet)) nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh ((cay dan) OR (cay lanh)) va cac cay co ((soi viet) OR (so viet)) nam ) OR ( chuong tinh ca dan va cac cay co ((soi viet) OR (so viet)) nam ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh ((cay dan) or (cay lanh)) va cac cay co ((soi viet) OR (so viet)) nam ) or ( chuong tinh ca dan va cac cay co ((soi viet) OR (so viet)) nam ))*".