Perhaps you should try some spelling variations:
cach tay » canh tay, cach ta, cach tu
van hanh » van thanh, ban hanh, van anh
xach tay » canh tay
hanh di » hanh vi, hanh de, hang di
hoi van » hoi va, hoi dan, hai van
lang ha » long ha
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cach tay) OR (xach tay)) lang ha noi. hieu ((ke cau) OR (ket cau)) hoi van hanh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach tay) or (xach tay)) lang ha noi. hieu ((ke cau) OR (ket cau)) hoi van hanh di cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((cach tay) or (xach tay)) lang ha noi. hieu ((ke cau) OR (ket cau)) hoi van hanh di cua te*.