Perhaps you should try some spelling variations:
canh tay » canh tac, thanh tay, anh ta
ban hanh » ban hang
hanh ca » hanh cac, hanh cat, hanh cua
duc ban » duc tan, duc van, dua ban
sanh ty » sach ty
va cao » va cac, va co, va dao
ca cua » co cua
ve cac » va cac, vien cac
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sanh ty) OR (canh tay)) nang o hoi. hieu ((ve cac) or (va cao)) duc ban hanh ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sanh ty) OR (canh tay)) nang o hoi. hieu ((ve cac) OR (va cao)) duc ban hanh ca cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sanh ty) OR (canh tay)) nang o hoi. hieu ((ve cac) or (va cao)) duc ban hanh ca cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sanh ty) OR (canh tay)) nang o hoi. hieu ((ve cac) or (va cao)) duc ban hanh ca cua te*.