Perhaps you should try some spelling variations:
xach tay » canh tay
sach tai » sach bai, sach tham, sach dao
hoc vat » hoc va, hoc viet, thuc vat
hanh di » hanh vi, hanh de, hang di
lang ha » long ha
hoc van » hoc dan, hoc va, hoc phan
di cua » dai cua, doi cua, de cua
va cao » va cac, va co, va dao
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: tu ((sach tai) OR (xach tay)) lang ha hoi. lieu va cao ((hoc van) OR (hoc vat)) hanh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tai) or (xach tay)) lang ha hoi. lieu va cao ((hoc van) OR (hoc vat)) hanh di cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tai) or (xach tay)) lang ha hoi. lieu va cao ((hoc van) OR (hoc vat)) hanh di cua te*.