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