Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nam xuc » cam xuc, nam xua, nam thuc
va chua » vua chua, ca chua, va chu
xuc van » duc van, luc van, vuc van
so sanh » do sanh
hieu va » lieu va, hieu qua
te sach » toc sach
va cua » via cua, ca cua, ma cua
va nam » van nam, ha nam, va nay
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: ((so sanh) or (te sach)) ky nang x hoi. hieu va nam xuc van hanh ((va cua) or (va chua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (te sach)) ky nang x hoi. hieu va nam xuc van hanh ((va cua) OR (va chua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (te sach)) ky nang x hoi. hieu va nam xuc van hanh ((va cua) or (va chua)) tre*.