Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
sach ty » sach tu, sach thu, xach tay
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
qua cam » qua cac, qua ca, qua cai
nang xa » nang x, lang xa, nang ma
xuc va » duc va, tuc va, luc va
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 ty) or (sach y)) nang xa hoi. hieu ((qua cam) OR (qua cham)) xuc va dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang xa hoi. hieu ((qua cam) OR (qua cham)) xuc va dinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach y)) nang xa hoi. hieu ((qua cam) OR (qua cham)) xuc va dinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang xa hoi. hieu ((qua cam) OR (qua cham)) xuc va dinh vi cua tre*.