Perhaps you should try some spelling variations:
ban tinh » ban thanh, quan tinh, ban hanh
tinh vi » trinh vi, tinh voi, tinh va
cam cuc » cham cuu, pham cuc
sach ky » sac ky, sach y, sach kem
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
sach ty » sach y, sach tu, sach thu
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: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu ve ((cam cuc) or (cam xuc)) ban tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu ve ((cam cuc) OR (cam xuc)) ban tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) dang xa hoi. hieu ve ((cam cuc) or (cam xuc)) ban tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu ve ((cam cuc) or (cam xuc)) ban tinh vi cua tre*.