Perhaps you should try some spelling variations:
khanh thai » nhanh thai, khanh thanh, khanh thuan
hieu vien » hieu hien, hieu viec, thieu nien
van khanh » van thanh, van hanh, van anh
cau tren » cu tren, dau tren, ca tren
cuu tre » cua tre, cau treo
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
vien da » vien dai, hien dai
co hai » co dai, co hoi, o hai
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty hang ((o hoi) or (co hai)). hieu vien da xuc van khanh thai ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang ((o hoi) OR (co hai)). hieu vien da xuc van khanh thai ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty hang ((o hoi) or (co hai)). hieu vien da xuc van khanh thai ((cuu tre) or (cau tren))*.