Perhaps you should try some spelling variations:
su sach » so sach, vu sach
xuc van » duc van, luc van, xuc ban
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
cao hoi » cau hoi, co hoi, cao hoc
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky nang) or (ty xang)) cao hoi. hieu va cac xuc van ((hanh di) or (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (ty xang)) cao hoi. hieu va cac xuc van ((hanh di) OR (hang di)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (ty xang)) cao hoi. hieu va cac xuc van ((hanh di) or (hang di)) cua tre*.