Perhaps you should try some spelling variations:
trinh cuu » trinh cau, trinh cua, trinh chu
trinh cao » trinh chao, trinh co, trinh cau
cao lanh » cao lan, cao anh, cao danh
cuu luat » cua luat, huu luat, cuu thuat
lanh va » hanh va, anh va, lanh dao
cac cam » cad cam, cac cap, cac cau
so viet » hoc viet
luat va » xuat va, luat ve, suat va
cac cay » ca cay, cac cap, cac cau
cam co » cac co, nam co, lam co
cay co » cac co, tay co, cay cong

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 cao lanh va cac cam co so viet nam ) or ( cong trinh cuu luat va cac cay co so viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh cao lanh va cac cam co so viet nam ) OR ( cong trinh cuu luat va cac cay co so viet nam )).
• Adding a wildcard symbol may retrieve word variants: (( cong trinh cao lanh va cac cam co so viet nam ) or ( cong trinh cuu luat va cac cay co so viet nam ))*.