Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
sach dao » lanh dao
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
sach 2 » sach y
vi cua » vai cua, di cua
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach dao) or (sach 2)) nang xa hoi. hieu ((ve cam) or (ve cac)) xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach dao) OR (sach 2)) nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach dao) or (sach 2)) nang xa hoi. hieu ((ve cam) or (ve cac)) xuc van hanh vi cua tre*.