Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh chao » trinh chat, trinh han, trinh co
trinh cao » trinh co, trinh cau, tinh cao
chao lan » cao lan, chao van, chao yang
soi viet » so viet, hoi viet, oi viet
lanh va » hanh va, doanh va, lang van
cac tai » cao tai, cac bai, cac dai
cac cay » ca cay, cac cam, cac cap
co hoi » co hoc, co loi
lan va » luan va, lan van, lang va
anh va » hanh va
nam co » nam cao, nam bo, nam so
cam co » cac co, cay co, lam co
co soi » cot soi, co so, co loi

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 cao ((((lanh va) or (lanh dao))) or (anh va)) cac ((cam co) or (nam co)) soi viet nam ) or ( chuong trinh chao lan va ((cac cay) or (cac tai)) ((co soi) OR (co hoi)) viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong trinh cao ((((lanh va) OR (lanh dao))) OR (anh va)) cac ((cam co) OR (nam co)) soi viet nam ) OR ( chuong trinh chao lan va ((cac cay) OR (cac tai)) ((co soi) OR (co hoi)) viet nam )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( chuong trinh cao ((((lanh va) or (lanh dao))) or (anh va)) cac ((cam co) or (nam co)) soi viet nam ) or ( chuong trinh chao lan va ((cac cay) or (cac tai)) ((co soi) OR (co hoi)) viet nam ))".
• Adding a wildcard symbol may retrieve word variants: (( chuong trinh cao ((((lanh va) or (lanh dao))) or (anh va)) cac ((cam co) or (nam co)) soi viet nam ) or ( chuong trinh chao lan va ((cac cay) or (cac tai)) ((co soi) OR (co hoi)) viet nam ))*.