Perhaps you should try some spelling variations:
su sach » so sach, vu sach
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
ve cham » ve chat, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve tai
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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 y nang xa hoi. hieu ((ve cai) or (((ve cham) or (va cham)))) tuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((ve cai) OR (((ve cham) OR (va cham)))) tuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((ve cai) or (((ve cham) or (va cham)))) tuc va hanh vi cua tre*.