Perhaps you should try some spelling variations:
trinh sau » trinh san, trinh cau, trinh su
trinh han » trinh quan
trinh co » trinh do, trinh cong, trinh hoa
sau lanh » sau lan, cau lanh, dau lanh
soi viet » so viet, hoi viet, oi viet
loi viet » loai viet, hoi viet, oi viet
cac cam » cad cam, cac cap, cac cau
luan va » luan van, luat va
lanh va » hanh va, anh va, lanh dao
cam co » cac co, nam co, cay co
ca tay » cam tay, ha tay, ca cay
tay co » ty co, cay co, tay o
co loi » co hoi
co soi » cot soi, co so, co hoi
va ca » va cao, va cai, va cau

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) or (((trinh han) or (trinh luat)))) luan va cac cam co soi viet nam ) or ( cong trinh sau lanh va ca tay co loi viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( chuong ((trinh co) OR (((trinh han) OR (trinh luat)))) luan va cac cam co soi viet nam ) OR ( cong trinh sau lanh va ca tay co loi viet nam )).
• Adding a wildcard symbol may retrieve word variants: (( chuong ((trinh co) or (((trinh han) or (trinh luat)))) luan va cac cam co soi viet nam ) or ( cong trinh sau lanh va ca tay co loi viet nam ))*.