Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
tai khoa » da khoa, noi khoa
so sanh » do sanh
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
tai hoa » thai hoa, thi hoa, dai hoa
cua tre » cua te, cuu tre, cua triet
ve cau » ke cau, va cau, ve cac
sanh y » sinh y, anh y, hanh y
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y nang ((tai hoa) or (tai khoa)). hieu ve cau ((luc va) or (duc van)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y nang ((tai hoa) OR (tai khoa)). hieu ve cau ((luc va) OR (duc van)) hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: so sanh y nang ((tai hoa) or (tai khoa)). hieu ve cau ((luc va) or (duc van)) hanh dai cua tre*.