Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
so sanh » do sanh
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
tai hoa » tai khoa, thai hoa, thi hoa
sanh y » sinh y, anh y, hanh y
ve cau » ke cau, va cau, ve cac
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 (da khoa)). hieu ve cau ((luc va) OR (duc van)) hanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y nang ((tai hoa) OR (da 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 (da khoa)). hieu ve cau ((luc va) OR (duc van)) hanh dai cua tre*.