Perhaps you should try some spelling variations:
xach tay » canh tay
van hang » van khang, van hoang, van thang
lang ha » long ha
cau hoc » cau hoi, cau hoa, cao hoc
hoc van » hoc dan, hoc va, hoc vat
hang di » hang doi, hang vi, hang dien
anh ta » anh tu, anh va, anh tuan
ky cau » ky chau, ke cau
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 ((xach tay) OR (anh ta)) lang ha noi. hieu ky cau hoc van hang di cua te~.
• Adding a wildcard symbol may retrieve word variants: tu ((xach tay) or (anh ta)) lang ha noi. hieu ky cau hoc van hang di cua te*.