Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu vien » hieu hien, hieu viec, hieu tieng
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
bac tu » ban tu, tac tu, cac tu
tu cua » hu cua, vu cua
dan va » doan va, ban va, han va
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. ((hieu vien) or (thieu nien)) bac tu cua ((dan va) or (dan ca)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. ((hieu vien) OR (thieu nien)) bac tu cua ((dan va) OR (dan ca)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu vien) or (thieu nien)) bac tu cua ((dan va) or (dan ca)) cuu tre*.