Perhaps you should try some spelling variations:
huong doi » huong dan, trong doi, dung doi
va huong » va thuong, va phuong, va tuong
bo sach » co sach, hoc sach
ty nang » ky nang, ty hang, ly nang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cham tu » pham tu, cam tu, chai tu
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
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: bo sach ((ty nang) or (ty xang)) x hoi. hieu va cham tu va huong doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ((ty nang) OR (ty xang)) x hoi. hieu va cham tu va huong doi cua tre.
• Adding a wildcard symbol may retrieve word variants: bo sach ((ty nang) or (ty xang)) x hoi. hieu va cham tu va huong doi cua tre*.