Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
vu khac » vu khanh, bui khac
vu kham » vu khanh
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (((vu khac) OR (vu kham)))) ky nang x ho. hieu va cac tuc xa hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((vu khac) OR (vu kham)))) ky nang x ho. hieu va cac tuc xa hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((vu khac) OR (vu kham)))) ky nang x ho. hieu va cac tuc xa hanh vai cua tre*.