Perhaps you should try some spelling variations:
chuong trinh » cong trinh
trinh cao » trinh chao, trinh cau, tinh cao
lanh van » lang van, anh van, lanh va
bang van » dang van, tang van, lang van
trinh co » trinh do, trinh cong, trinh hoa
soi viet » so viet, hoi viet, oi viet
tang va » trang va, tang van, thang va
cac cay » ca cay, cac cam, cac cau
cac cap » cao cap, cac cam, cac cau
ky lanh » ky anh, ky danh, ky hanh
tay co » ty co, cay co, tay o
ca tay » cam tay, ha tay, ca cay
van ca » van cau, van cua, dan ca
co soi » cot soi, co so, co hoi
dao co » dao cao, dao cho, dao o

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