Perhaps you should try some spelling variations:
ban tinh » ban thanh, quan tinh, ban hanh
vai cua » hai cua, lai cua, bai cua
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
dang xa » dang xay, dang ha, dang va
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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 (lang xa)) hoi. hieu ve cam cuc ban tinh ((vai cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve cam cuc ban tinh ((vai cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve cam cuc ban tinh ((vai cua) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve cam cuc ban tinh ((vai cua) or (dai cua)) triet*.