Perhaps you should try some spelling variations:
sach dao » lanh dao
tinh va » tich va, trinh van, trinh vat
va tinh » may tinh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
ve cai » va cai, ve cac, ve tai
xuc va » duc va, tuc va, luc va
va cua » va chua, via cua, ca cua

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