Perhaps you should try some spelling variations:
sach dao » lanh dao
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
ve cai » va cai, ve cac, ve tai

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