Perhaps you should try some spelling variations:
tai khoa » da khoa, noi khoa
cuu tre » cua tre, cau tren, cau treo
hanh va » hang va
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
lai hoi » dai hoi, lai hoa, lai roi
sai ky » sac ky
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky dang ((tai khoa) or (lai hoi)). hieu ve cac xuc va ((hanh vi) or (hanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky dang ((tai khoa) OR (lai hoi)). hieu ve cac xuc va ((hanh vi) OR (hanh va)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky dang ((tai khoa) or (lai hoi)). hieu ve cac xuc va ((hanh vi) or (hanh va)) cuu tre*.