Perhaps you should try some spelling variations:
trinh cao » trinh chao, trinh co, trinh cau
giao yang » miao yang, gian lang, gia tang
trinh han » trinh quan
caoc cay » cac cay, cuoc chay, cao cap
han lanh » han danh, hat lanh, thanh lanh
dai viet » mai viet, tai viet, da viet
dao viet » so viet, o viet
loi viet » loai viet, hoi viet, doi viet
va caoc » va cuoc, va cao
yang va » hang va, bang va, sang va
oi viet » hoi viet, o viet, cuoi viet
cac tay » cac cay, cac tac, cac tai
cau cay » chau cay, cau xay, dau cay
dang va » dang van, dang vat, hang va
cua cay » cua cac
lanh va » hanh va, anh va, lanh dao
cay co » cac co, cay cong
tay co » ty co, tay o
va cua » va chua, via cua, ca cua
va cau » van cau, va dau, va cao

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 dang va cau cay co ((dai viet) or (dao viet)) nam ) or ( cong trinh cao dang va cua cay co ((dai viet) or (dao viet)) nam ))) or ((( cong trinh han lanh va cac tay co ((loi viet) OR (oi viet)) nam ) or ( cong trinh giao yang va caoc cay co ((loi viet) OR (oi viet)) nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( cong trinh cao dang va cau cay co ((dai viet) OR (dao viet)) nam ) OR ( cong trinh cao dang va cua cay co ((dai viet) OR (dao viet)) nam ))) OR ((( cong trinh han lanh va cac tay co ((loi viet) OR (oi viet)) nam ) OR ( cong trinh giao yang va caoc cay co ((loi viet) OR (oi viet)) nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( cong trinh cao dang va cau cay co ((dai viet) or (dao viet)) nam ) or ( cong trinh cao dang va cua cay co ((dai viet) or (dao viet)) nam ))) or ((( cong trinh han lanh va cac tay co ((loi viet) OR (oi viet)) nam ) or ( cong trinh giao yang va caoc cay co ((loi viet) OR (oi viet)) nam ))))".
• Adding a wildcard symbol may retrieve word variants: (((( cong trinh cao dang va cau cay co ((dai viet) or (dao viet)) nam ) or ( cong trinh cao dang va cua cay co ((dai viet) or (dao viet)) nam ))) or ((( cong trinh han lanh va cac tay co ((loi viet) OR (oi viet)) nam ) or ( cong trinh giao yang va caoc cay co ((loi viet) OR (oi viet)) nam ))))*.