Perhaps you should try some spelling variations:
huong doi » huong dan, trong doi, dung doi
va huong » va thuong, va phuong, va tuong
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ty hang
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, nam thuc
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
cua te » cua tu
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: so sach ty nang ((x ho) or (o hoi)). hieu va cam tuc va huong doi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ((x ho) OR (o hoi)). hieu va cam tuc va huong doi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ((x ho) or (o hoi)). hieu va cam tuc va huong doi ((cua tre) or (cua te))*.