Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
vu sach » vu bach, su sach, vu khach
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
so sach » so sanh, bo sach, co sach
cam tu » cam thu, dam tu, tam tu
nam tu » nam thu, nam thuc
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: ((vu sach) or (so sach)) ky nang x hoi. hieu va ((cam tu) OR (nam tu)) va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ky nang x hoi. hieu va ((cam tu) OR (nam tu)) va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ky nang x hoi. hieu va ((cam tu) OR (nam tu)) va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ky nang x hoi. hieu va ((cam tu) OR (nam tu)) va hanh vai cuu tre*.