Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
xuc van » duc van, luc van, xuc ban
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
sach v » sach va, sach 2, sach vay
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach y)) lang xa hoi. ((hieu ve) OR (hieu va)) cac xuc van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) lang xa hoi. ((hieu ve) OR (hieu va)) cac xuc van hanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach y)) lang xa hoi. ((hieu ve) OR (hieu va)) cac xuc van hanh di cua tre*".