Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cach tay » canh tay, xach tay, cach tu
cach ta » cach tu, cach pha, xach tay
lang ha » long ha
hieu ke » hieu kem, chieu ke, hieu ky
ha hoi » hoa hoi, ha noi, xa hoi
ke cau » ket cau
cua te » cua tu
tuan » quan, tran, luan

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 (cach ta)) lang ha hoi. hieu ke cau hoi ((van thanh) OR (tuan anh)) dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach tay) OR (cach ta)) lang ha hoi. hieu ke cau hoi ((van thanh) or (tuan anh)) dai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((cach tay) OR (cach ta)) lang ha hoi. hieu ke cau hoi ((van thanh) or (tuan anh)) dai cua te*.