Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
xach tay » canh tay
sach tay » sach hay, sach nay, sach tai
lang ha » long ha
hoc van » hoc dan, hoc va, hoc vat
di cua » dai cua, doi cua, de cua
ke cao » ke co, te cao, he cao
ke cau » ket cau
ha hoi » hoa hoi, ha noi, xa hoi
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: te ((sach tay) OR (xach tay)) lang ha hoi. hieu ((ke cao) OR (ke cau)) hoc van thanh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tay) OR (xach tay)) lang ha hoi. hieu ((ke cao) or (ke cau)) hoc van thanh di cua te~".
• Adding a wildcard symbol may retrieve word variants: te ((sach tay) OR (xach tay)) lang ha hoi. hieu ((ke cao) or (ke cau)) hoc van thanh di cua te*.