Perhaps you should try some spelling variations:
trinh chao » trinh chat, trinh han, trinh giao
trinh co » trinh do, trinh cong, trinh hoa
chao anh » cao anh, khao danh, chao yang
soi viet » so viet, hoi viet, oi viet
cac anh » cac banh, cao anh, cac nganh
cac nam » bac nam, cac cam, cac ham
so soi » mo soi
nam so » nam sao
ca anh » cao anh, ha anh, va anh
cam bo » can bo, cac bo, cam lo
bo soi » bo doi, bo noi, bo so
anh va » hanh va
co anh » cao anh, co hanh, do anh
ca bo » cua bo, can bo, cac bo

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( cong trinh chao anh va cac nam so soi viet nam ) or ((( chuong trinh ((cac anh) OR (ca anh)) va cac ((cam bo) or (ca bo)) soi viet nam ) or ( chuong trinh co anh va cac nam bo soi viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh chao anh va cac nam so soi viet nam ) OR ((( chuong trinh ((cac anh) OR (ca anh)) va cac ((cam bo) OR (ca bo)) soi viet nam ) OR ( chuong trinh co anh va cac nam bo soi viet nam ))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cong trinh chao anh va cac nam so soi viet nam ) or ((( chuong trinh ((cac anh) OR (ca anh)) va cac ((cam bo) or (ca bo)) soi viet nam ) or ( chuong trinh co anh va cac nam bo soi viet nam ))))*".